Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:2309.12705 · Physical Review Research

Exponentially faster preparation of quantum dimers via driven-dissipative stabilization

Kian Hwee Lim, Wai‐Keong Mok, Jia-Bin You, Jian Feng Kong, Davit Aghamalyan

Published Aug 29, 2024• 1 citation
arXivHTMLPDF

Abstract

We propose a rapid, high-fidelity, and noise-resistant scheme to generate many-body entanglement between multiple qubits stabilized by dissipation into a 1D bath. Using a carefully designed time-dependent drive, our scheme achieves a provably exponential speedup over state-of-the-art dissipative stabilization schemes in 1 D baths, which require a timescale that diverges as the target fidelity approaches unity and scales exponentially with the number of qubits. To prepare quantum dimer pairs, our scheme only requires local 2-qubit control Hamiltonians, with a protocol time that is independent of system size. This provides a scalable and robust protocol for generating a large number of entangled dimer pairs on-demand, serving as a fundamental resource for many quantum metrology and quantum information processing tasks. Published by the American Physical Society 2024

DOI
10.1103/physrevresearch.6.l032047

Related papers

Hardware-efficient stabilization of entanglement via engineered dissipation in superconducting circuits

C. H. Chen, Kai Tang, Yuxuan Zhou +8 more

Generation and preservation of quantum entanglement are among the primary tasks in quantum information processing. State stabilization via quantum bath engineering offers a resource-efficient approach to achieve this objective. However, current methods for engineering dissipative channels to stabilize target entangled states often require specialized hardware designs, complicating experimental realization and hindering their compatibility with scalable quantum computation architectures. In this work, we propose and experimentally demonstrate a stabilization protocol readily implementable in the mainstream integrated superconducting quantum circuits. The approach utilizes a Raman process involving a resonant (or nearly resonant) superconducting qubit array and the qubits' dedicated readout resonators to effectively develop nonlocal dissipative channels. Leveraging individual controllability of the qubits and resonators, the protocol stabilizes two-qubit Bell states with a fidelity of 90.7 % , marking the highest reported value in solid-state platforms to date. Furthermore, by extending this strategy to include three qubits, an entangled W state is achieved with a fidelity of 86.2 % . This demonstrates the protocol's extensibility beyond two-qubit systems. Notably, the protocol is of practical interest since it only utilizes existing hardware common to standard operations in the underlying superconducting circuits, thereby facilitating the exploration of many-body quantum entanglement with dissipative resources.

arXiv:2407.13321•Physical Review Research•Apr 16, 2025•10 citations

Chiral Entangled-State Generation through Dissipative Quantum Dynamics

Huixia Gao, Konghao Sun, Yiwen Han +6 more

Dissipation, though often detrimental to quantum entanglement, can be manipulated for the preparation of entangled states, wherein ingeniously designed quantum jump processes drive the system toward the desired steady state. Here we venture beyond this paradigm, and demonstrate a new type of entanglement generation in dissipative quantum dynamics. Combining driven-dissipative steady-state engineering and adiabatic passage, we propose a general protocol where the final entangled state depends on the chirality of the evolution path in the parameter space, a scheme that is further extendable to multipartite entanglement. By simulating the Liouvillian dynamics through the quantum Langevin equation for a pair of photons, we experimentally confirm the noise-resistant chiral preparation of various entangled states with high fidelity and concurrence. Our work establishes parametric chiral dynamics as a scalable and robust tool for controllable entanglement generation, paving the way for its applications in quantum information.

quant-pharXiv:2607.17302•Jul 21, 2026•0 citations

Scalable Dissipative Preparation of Many-Body Entanglement

Florentin Reiter, David Reeb, Anders Søndberg Sørensen

We present a technique for the dissipative preparation of highly entangled multiparticle states of atoms coupled to common oscillator modes. By combining local spontaneous emission with coherent couplings, we engineer many-body dissipation that drives the system from an arbitrary initial state into a Greenberger-Horne-Zeilinger state. We demonstrate that using our technique highly entangled steady states can be prepared efficiently in a time that scales polynomially with the system size. Our protocol assumes generic couplings and will thus enable the dissipative production of multiparticle entanglement in a wide range of physical systems. As an example, we demonstrate the feasibility of our scheme in state-of-the-art trapped-ion systems.

arXiv:1501.06611•Physical Review Letters•Jul 20, 2016•124 citations

Steering Quantum Information Into Logical Subspaces Using Dissipation

Ivan Rojkov

Practical implementations of quantum information processing will ultimately rely on our ability to control large-scale quantum systems. This control faces two major challenges: the exponential growth of the state space with the number of components, and the ability to control dissipation in these systems. While current small- and medium-scale quantum platforms rely on traditional approaches that reason at the level of individual quantum states and aim to isolate systems from their environment, such strategies become increasingly impractical as system size grows. The complexity of interactions and the presence of noise in realistic implementations demand scalable approaches that go beyond state-by-state control. Such approaches require a shift toward reasoning in terms of collections of states that share symmetries or dynamical properties, and towards dealing with systems being far from their equilibrium state because of their openness. This thesis explores methods to understand and engineer dissipation for stabilizing quantum states and subspaces, enabling autonomous error correction, and facilitating robust logical operations, all through the lens of subspaces of the exponentially large state space. In particular, we develop symmetry-protected and nonlinear stabilization schemes that not only stabilize states and subspaces but also exhibit intrinsic error-correcting features rooted in driven-dissipative dynamics. We introduce a novel error correction strategy based on gradual entropy removal, offering scalable implementations with reduced overhead. Finally, we investigate the interplay between dissipation and logical operations, uncovering both limitations and opportunities in realistic quantum sensing and gate protocols, with a special focus on finite-energy bosonic codes.

•Jan 1, 2025•0 citations

Optimizing the preparation of Dicke states using counterdiabatic driving methods

Fengzhe Tang, Gangcheng Wang

Recently, the technique of counterdiabatic driving, which provides an effective strategy for accelerating adiabatic quantum evolution, has been widely applied in the preparation of many-body quantum states. In this work, we propose a theoretical scheme for the efficient preparation of Dicke states in a system of non-interacting two-level atoms. Our approach leverages the one-axis twisting (OAT) interaction to generate non-classical correlations and combines it with time-dependent external fields to achieve precise control over the dynamics of the system. By employing rapid adiabatic passage (RAP), it demonstrates how the system can be steered from an initial coherent spin state to a target Dicke state with high fidelity [S. C. Carrasco, M. H. Goerz, S. A. Malinovskaya, V. Vuletić, W. P. Schleich, and V. S. Malinovsky, Phys. Rev. Lett. \textbf{132}, 153603 (2024)]. To further optimize the preparation process, we introduce counterdiabatic driving (CD), which suppresses non-adiabatic transitions. Numerical simulations confirm that our scheme can achieve high-fidelity Dicke states for a moderate number of particles. Our results provide a scalable and experimentally feasible approach to prepare Dicke states, with potential applications in quantum metrology, quantum communication, and quantum information processing.

quant-pharXiv:2605.14378•May 15, 2026•0 citations

Quantum state preparation by controlled dissipation in finite time: From classical to quantum controllers

Giacomo Baggio, Francesco Ticozzi, Lorenza Viola

We propose a general scheme for dissipatively preparing arbitrary pure quantum states on a multipartite qubit register in a finite number of basic control blocks. Our “splitting-subspace” approach relies on control resources that are available in a number of scalable quantum technologies (complete unitary control on the target system, an ancillary resettable qubit and controlled-not gates between the target and the ancilla), and can be seen as a “quantum-controller” implementation of a sequence of classical feedback loops. We show how a large degree of flexibility exists in engineering the required conditional operations, and make explicit contact with a stabilization protocol used for dissipative quantum state preparation and entanglement generation in recent experiments with trapped ions.

arXiv:1209.5568•IEEE Conference on Decision and Control (CDC)•Dec 1, 2012•13 citations
We propose a rapid, high-fidelity, and noise-resistant scheme to generate many-body entanglement between multiple qubits stabilized by dissipation into a 1D bath. Using a carefully designed time-dependent drive, our scheme achieves a provably exponential speedup over state-of-the-art dissipative stabilization schemes in 1 D baths, which require a timescale that diverges as the target fidelity approaches unity and scales exponentially with the number of qubits. To prepare quantum dimer pairs, our scheme only requires local 2-qubit control Hamiltonians, with a protocol time that is independent of system size. This provides a scalable and robust protocol for generating a large number of entangled dimer pairs on-demand, serving as a fundamental resource for many quantum metrology and quantum information processing tasks. Published by the American Physical Society 2024
Generation and preservation of quantum entanglement are among the primary tasks in quantum information processing. State stabilization via quantum bath engineering offers a resource-efficient approach to achieve this objective. However, current methods for engineering dissipative channels to stabilize target entangled states often require specialized hardware designs, complicating experimental realization and hindering their compatibility with scalable quantum computation architectures. In this work, we propose and experimentally demonstrate a stabilization protocol readily implementable in the mainstream integrated superconducting quantum circuits. The approach utilizes a Raman process involving a resonant (or nearly resonant) superconducting qubit array and the qubits' dedicated readout resonators to effectively develop nonlocal dissipative channels. Leveraging individual controllability of the qubits and resonators, the protocol stabilizes two-qubit Bell states with a fidelity of 90.7 % , marking the highest reported value in solid-state platforms to date. Furthermore, by extending this strategy to include three qubits, an entangled W state is achieved with a fidelity of 86.2 % . This demonstrates the protocol's extensibility beyond two-qubit systems. Notably, the protocol is of practical interest since it only utilizes existing hardware common to standard operations in the underlying superconducting circuits, thereby facilitating the exploration of many-body quantum entanglement with dissipative resources.
Dissipation, though often detrimental to quantum entanglement, can be manipulated for the preparation of entangled states, wherein ingeniously designed quantum jump processes drive the system toward the desired steady state. Here we venture beyond this paradigm, and demonstrate a new type of entanglement generation in dissipative quantum dynamics. Combining driven-dissipative steady-state engineering and adiabatic passage, we propose a general protocol where the final entangled state depends on the chirality of the evolution path in the parameter space, a scheme that is further extendable to multipartite entanglement. By simulating the Liouvillian dynamics through the quantum Langevin equation for a pair of photons, we experimentally confirm the noise-resistant chiral preparation of various entangled states with high fidelity and concurrence. Our work establishes parametric chiral dynamics as a scalable and robust tool for controllable entanglement generation, paving the way for its applications in quantum information.
We present a technique for the dissipative preparation of highly entangled multiparticle states of atoms coupled to common oscillator modes. By combining local spontaneous emission with coherent couplings, we engineer many-body dissipation that drives the system from an arbitrary initial state into a Greenberger-Horne-Zeilinger state. We demonstrate that using our technique highly entangled steady states can be prepared efficiently in a time that scales polynomially with the system size. Our protocol assumes generic couplings and will thus enable the dissipative production of multiparticle entanglement in a wide range of physical systems. As an example, we demonstrate the feasibility of our scheme in state-of-the-art trapped-ion systems.
Practical implementations of quantum information processing will ultimately rely on our ability to control large-scale quantum systems. This control faces two major challenges: the exponential growth of the state space with the number of components, and the ability to control dissipation in these systems. While current small- and medium-scale quantum platforms rely on traditional approaches that reason at the level of individual quantum states and aim to isolate systems from their environment, such strategies become increasingly impractical as system size grows. The complexity of interactions and the presence of noise in realistic implementations demand scalable approaches that go beyond state-by-state control. Such approaches require a shift toward reasoning in terms of collections of states that share symmetries or dynamical properties, and towards dealing with systems being far from their equilibrium state because of their openness. This thesis explores methods to understand and engineer dissipation for stabilizing quantum states and subspaces, enabling autonomous error correction, and facilitating robust logical operations, all through the lens of subspaces of the exponentially large state space. In particular, we develop symmetry-protected and nonlinear stabilization schemes that not only stabilize states and subspaces but also exhibit intrinsic error-correcting features rooted in driven-dissipative dynamics. We introduce a novel error correction strategy based on gradual entropy removal, offering scalable implementations with reduced overhead. Finally, we investigate the interplay between dissipation and logical operations, uncovering both limitations and opportunities in realistic quantum sensing and gate protocols, with a special focus on finite-energy bosonic codes.
Recently, the technique of counterdiabatic driving, which provides an effective strategy for accelerating adiabatic quantum evolution, has been widely applied in the preparation of many-body quantum states. In this work, we propose a theoretical scheme for the efficient preparation of Dicke states in a system of non-interacting two-level atoms. Our approach leverages the one-axis twisting (OAT) interaction to generate non-classical correlations and combines it with time-dependent external fields to achieve precise control over the dynamics of the system. By employing rapid adiabatic passage (RAP), it demonstrates how the system can be steered from an initial coherent spin state to a target Dicke state with high fidelity [S. C. Carrasco, M. H. Goerz, S. A. Malinovskaya, V. Vuletić, W. P. Schleich, and V. S. Malinovsky, Phys. Rev. Lett. \textbf{132}, 153603 (2024)]. To further optimize the preparation process, we introduce counterdiabatic driving (CD), which suppresses non-adiabatic transitions. Numerical simulations confirm that our scheme can achieve high-fidelity Dicke states for a moderate number of particles. Our results provide a scalable and experimentally feasible approach to prepare Dicke states, with potential applications in quantum metrology, quantum communication, and quantum information processing.
We propose a general scheme for dissipatively preparing arbitrary pure quantum states on a multipartite qubit register in a finite number of basic control blocks. Our “splitting-subspace” approach relies on control resources that are available in a number of scalable quantum technologies (complete unitary control on the target system, an ancillary resettable qubit and controlled-not gates between the target and the ancilla), and can be seen as a “quantum-controller” implementation of a sequence of classical feedback loops. We show how a large degree of flexibility exists in engineering the required conditional operations, and make explicit contact with a stabilization protocol used for dissipative quantum state preparation and entanglement generation in recent experiments with trapped ions.