期刊
PHYSICAL REVIEW LETTERS
卷 128, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.110503
关键词
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资金
- Danish National Research Foundation through the Center of Excellence for Macroscopic Quantum States (bigQ) [DNRF0142]
- Czech Science Foundation [21-13265X]
- European Union [H2020-WIDESPREAD-2020-5, 951737]
- Independent Research Fund Denmark
We propose a protocol for transferring arbitrary continuous-variable quantum states into a few discrete variable qubits and back. The protocol is deterministic and only relies on two-mode Rabi-type interactions that are readily available in trapped-ion and superconducting circuit platforms. The errors caused by transferring an infinite-dimensional state into a finite-dimensional register are exponentially suppressed with the number of qubits. Furthermore, the encoded states show robustness against noise acting on the qubits. Our protocol provides a powerful and flexible tool for discrete-continuous hybrid quantum systems.
We present a protocol for transferring arbitrary continuous-variable quantum states into a few discrete variable qubits and back. The protocol is deterministic and utilizes only two-mode Rabi-type interactions that are readily available in trapped-ion and superconducting circuit platforms. The inevitable errors caused by transferring an infinite-dimensional state into a finite-dimensional register are suppressed exponentially with the number of qubits. Furthermore, the encoded states exhibit robustness against noise, such as dephasing and amplitude damping, acting on the qubits. Our protocol thus provides a powerful and flexible tool for discrete-continuous hybrid quantum systems.
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