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:1111.6047 · Physical Review Letters

Generation of Mesoscopic Entangled States in a Cavity Coupled to an Atomic Ensemble

Gor Nikoghosyan, Michael J. Hartmann, Martin Bodo Plenio

Published Mar 23, 2012• 24 citations
arXivHTMLPDF

Abstract

We propose a novel scheme for the efficient production of entangled states for N photons of the form |N>(a)|0>(b) + |0>(a)|N>(b) (NOON states) based on the resonant interaction of a pair of quantized cavity modes with an ensemble of atoms. We show that, in the strong-coupling regime, the adiabatic evolution of the system tends to a limiting state that describes mesoscopic entanglement between photons and atoms which can easily be converted to a purely photonic or atomic NOON state. We also demonstrate the remarkable property that the efficiency of this scheme increases exponentially with the cavity cooperativity factor, which gives efficient access to high number NOON states. The experimental feasibility of the scheme is discussed, and its efficiency is demonstrated numerically.

DOI
10.1103/physrevlett.108.123603

Related papers

Superposition and entanglement of mesoscopic squeezed vacuum states in cavity QED

Changyong Chen, Mang Feng, Kelin Gao

We propose a scheme to generate superposition and entanglement between the mesoscopic squeezed vacuum states by considering the two-photon interaction of $N$ two-level atoms in a cavity with high quality factor, assisted by a strong driving field. By virtue of specific choices of the cavity detuning, a number of multiparty entangled states can be prepared, including the entanglement between the atomic and the squeezed vacuum cavity states and between the squeezed vacuum states and the coherent states of the cavities. We also present how to prepare entangled states and ``Schr\"odinger cats'' states regarding the squeezed vacuum states of the cavity modes. The possible extension and application of our scheme are discussed. Our scheme is close to the reach with current cavity QED techniques.

Physical Review A•Mar 16, 2006•19 citations

Bootstrapping Approach for Generating Maximally Path-Entangled Photon States

Kishore T. Kapale, Jonathan P. Dowling

We propose a bootstrapping approach to the generation of maximally path-entangled states of photons, so-called "NOON states." The strong atom-light interaction of cavity QED can be employed to generate NOON states with about 100 photons. These can then be used to boost the existing experimental Kerr nonlinearities based on quantum coherence effects, to facilitate NOON generation with an arbitrarily large number of photons. We also offer an alternative scheme that uses an atom-cavity dispersive interaction to obtain a sufficiently high Kerr nonlinearity necessary for arbitrary NOON generation.

arXiv:quant-ph/0612196•Physical Review Letters•Aug 3, 2007•46 citations

Carving Complex Many-Atom Entangled States by Single-Photon Detection

Wenlan Chen, Jiazhong Hu, Yiheng Duan +3 more

We propose a versatile and efficient method to generate a broad class of complex entangled states of many atoms via the detection of a single photon. For an atomic ensemble contained in a strongly coupled optical cavity illuminated by weak single- or multifrequency light, the atom-light interaction entangles the frequency spectrum of a transmitted photon with the collective spin of the atomic ensemble. Simple time-resolved detection of the transmitted photon then projects the atomic ensemble into a desired pure entangled state. This method can be implemented with existing technology, yields high success probability per trial, and can generate complex entangled states such as mesoscopic superposition states of coherent spin states with high fidelity.

arXiv:1508.02457•Physical Review Letters•Dec 18, 2015•71 citations

A Bootstrapping Approach for Generating Maximally Path-Entangled Photon States

Kishore T. Kapale, Jonathan P. Dowling

We propose a bootstrapping approach to generation of maximally path-entangled states of photons, so called ``NOON states'', achievable within the current experimental technology. Strong atom-light interaction of cavity QED can be employed to generate NOON states with about 100 photons; which can then be used to boost the existing experimental Kerr nonlinearities based on quantum coherence effects to facilitate NOON generation with arbitrarily large number of photons. We also offer an alternative scheme that uses an atom-cavity dispersive interaction to obtain sufficiently high Kerr-nonlinearity necessary for arbitrary NOON generation.

International Conference on Quantum Information•Jan 1, 2007•24 citations

Generation of SU(2) Coherent States for a Cavity Mode and a Collective Atomic Mode

Zheng Shi-Biao

We propose a scheme for generation of SU(2) coherent states for an atomic ensemble and a cavity mode. In the scheme a collection of two-level atoms resonantly interact with a single-mode quantized field. Under certain conditions, the system can evolve from a Fock state to a highly entangled SU(2) coherent state. The operation speed increases as the number of atoms increases, which is important in view of decoherence.

Communications in Theoretical Physics•May 1, 2009•0 citations

Deterministic generation of hybrid high- N NOON states with Rydberg atoms trapped in microwave cavities

Naeimeh Mohseni, Shahpoor Saeidian, Jonathan P. Dowling +1 more

Trapped atoms are among the most promising platforms for quantum technologies. They play a remarkable role in quantum simulation as well as high-precision quantum metrology, which exploits the quantum coherence of a single electronic or motional degree of freedom of an atom or an ensemble. However, future high-precision quantum metrology will require the use of entangled states of several degrees of freedom. Here we propose a protocol capable of generating high-$N$ NOON states where the entanglement is shared between the motion of a trapped atom and an electromagnetic cavity mode, a so-called ``hybrid'' configuration. We explore the feasibility of the proposal in a platform consisting of an optically trapped neutral atom excited to its circular-Rydberg-state manifold, coupled to the modes of a high-$Q$ microwave cavity. This compact hybrid architecture has the advantage that it can couple to signals of very different nature, which modify either the atom's motion or the cavity modes. Moreover, the exact same setup can be used right after the state-preparation phase to implement the interferometer required for quantum metrology.

arXiv:1809.09835•Physical Review A•Jan 8, 2020•18 citations
We propose a novel scheme for the efficient production of entangled states for N photons of the form |N>(a)|0>(b) + |0>(a)|N>(b) (NOON states) based on the resonant interaction of a pair of quantized cavity modes with an ensemble of atoms. We show that, in the strong-coupling regime, the adiabatic evolution of the system tends to a limiting state that describes mesoscopic entanglement between photons and atoms which can easily be converted to a purely photonic or atomic NOON state. We also demonstrate the remarkable property that the efficiency of this scheme increases exponentially with the cavity cooperativity factor, which gives efficient access to high number NOON states. The experimental feasibility of the scheme is discussed, and its efficiency is demonstrated numerically.
We propose a scheme to generate superposition and entanglement between the mesoscopic squeezed vacuum states by considering the two-photon interaction of NNN two-level atoms in a cavity with high quality factor, assisted by a strong driving field. By virtue of specific choices of the cavity detuning, a number of multiparty entangled states can be prepared, including the entanglement between the atomic and the squeezed vacuum cavity states and between the squeezed vacuum states and the coherent states of the cavities. We also present how to prepare entangled states and ``Schr\"odinger cats'' states regarding the squeezed vacuum states of the cavity modes. The possible extension and application of our scheme are discussed. Our scheme is close to the reach with current cavity QED techniques.
We propose a bootstrapping approach to the generation of maximally path-entangled states of photons, so-called "NOON states." The strong atom-light interaction of cavity QED can be employed to generate NOON states with about 100 photons. These can then be used to boost the existing experimental Kerr nonlinearities based on quantum coherence effects, to facilitate NOON generation with an arbitrarily large number of photons. We also offer an alternative scheme that uses an atom-cavity dispersive interaction to obtain a sufficiently high Kerr nonlinearity necessary for arbitrary NOON generation.
We propose a versatile and efficient method to generate a broad class of complex entangled states of many atoms via the detection of a single photon. For an atomic ensemble contained in a strongly coupled optical cavity illuminated by weak single- or multifrequency light, the atom-light interaction entangles the frequency spectrum of a transmitted photon with the collective spin of the atomic ensemble. Simple time-resolved detection of the transmitted photon then projects the atomic ensemble into a desired pure entangled state. This method can be implemented with existing technology, yields high success probability per trial, and can generate complex entangled states such as mesoscopic superposition states of coherent spin states with high fidelity.
We propose a bootstrapping approach to generation of maximally path-entangled states of photons, so called ``NOON states'', achievable within the current experimental technology. Strong atom-light interaction of cavity QED can be employed to generate NOON states with about 100 photons; which can then be used to boost the existing experimental Kerr nonlinearities based on quantum coherence effects to facilitate NOON generation with arbitrarily large number of photons. We also offer an alternative scheme that uses an atom-cavity dispersive interaction to obtain sufficiently high Kerr-nonlinearity necessary for arbitrary NOON generation.
Trapped atoms are among the most promising platforms for quantum technologies. They play a remarkable role in quantum simulation as well as high-precision quantum metrology, which exploits the quantum coherence of a single electronic or motional degree of freedom of an atom or an ensemble. However, future high-precision quantum metrology will require the use of entangled states of several degrees of freedom. Here we propose a protocol capable of generating high-NNN NOON states where the entanglement is shared between the motion of a trapped atom and an electromagnetic cavity mode, a so-called ``hybrid'' configuration. We explore the feasibility of the proposal in a platform consisting of an optically trapped neutral atom excited to its circular-Rydberg-state manifold, coupled to the modes of a high-QQQ microwave cavity. This compact hybrid architecture has the advantage that it can couple to signals of very different nature, which modify either the atom's motion or the cavity modes. Moreover, the exact same setup can be used right after the state-preparation phase to implement the interferometer required for quantum metrology.