The photon shuttle

Seunghyun Baek, Seok-Hyung Lee, Dongmoon Min +1 more

We propose Shuttling-based Distributed Quantum Computing (SDQC), a hybrid architecture that combines the strengths of physical qubit shuttling and distributed quantum computing to enable scalable trapped-ion quantum computing. SDQC performs non-local quantum operations by distributing entangled ion qubits via deterministic shuttling, combining the high-fidelity and deterministic operations of shuttling-based architectures with the parallelism and pipelining advantages of distributed quantum computing. We present (1) a practical architecture incorporating quantum error correction (QEC), (2) pipelining strategies to exploit parallelism in entanglement distribution and measurement, and (3) a performance evaluation in terms of logical error rate and clock speed. For a 256-bit elliptic-curve discrete logarithm problem (ECDLP) instance, which requires 2,871 logical qubits at code distance 13, SDQC achieves a logical error rate which is $1.20^{+0.94}_{-0.45}\times10^{-8}$ of Photonic DQC error rate and $3.79^{+5.09}_{-2.84}\times10^{-3}$ of Quantum Charge-Coupled Device (QCCD) error rate, while providing 2.82 times faster logical clock speed than QCCD.

Russell Ruthen

Edward T. Sleva, Isaac M. Xavier, A. H. Zewail

Rachel J. Berkowitz

Researchers demonstrate a way to shuttle photons between modules of a quantum processor that can detect and correct communication losses.

Noriaki Horiuchi

Leisheng Jin, Lei Ying, Xiaohong Yan

In this paper, we investigate dynamic properties and controllability of a cavity optomechanical system mechanically connected to a single-electron quantum shuttle, which includes three coupled modes, i.e., optical, mechanical, and electrical modes. Based on quantum description and quantum Langevin framework, the dynamics of these three modes under conditions of weak and strong optical driving are investigated via comprehensive bifurcation analysis. In the weak-driving regime, there is a transition point, where the amplitudes of mechanical and optical modes abruptly jump and the electrical mode decays to a static state. In the strong-driving regime, the three modes exhibit more complicated dynamics, where transitions of period 1–period 2 and periodic–chaotic state are observed. However, the electrical mode shows a different dynamical behavior. Finally, current analysis of the quantum shuttle is presented and discussed. The optical-driven quantum shuttle can be realized in experiments and has potential to serve as a new paradigm for exploring photon-based quantum information processing/transacting and quantum sensing.