Quantum interference of stored dual-channel spin-wave excitations in a single tripod system

Journal Article · Fri Apr 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.043815· OSTI ID:21544701

Hai, Wang; Shujing, Li; Zhongxiao, Xu; Xingbo, Zhao; Lijun, Zhang; Jiahua, Li; Yuelong, Wu; Changde, Xie; Kunchi, Peng ^[1]; Min, Xiao ^[2]

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1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006 (China)
2. The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006 (China)

We present an experimental demonstration of dual-channel memory in a single tripod atomic system. The total readout signal exhibits either constructive or destructive interference when the dual-channel spin-wave excitations (SWEs) are retrieved by two reading beams with a controllable relative phase. When the two reading beams have opposite phases, the SWEs will remain in the medium, which can be retrieved later with two in-phase reading beams. Such a phase-sensitive storage and retrieval scheme can be used to measure and control the relative phase between the two SWEs in the memory medium, which may find applications in quantum-information processing.

• OSTI ID: 21544701
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
ENERGY-LEVEL TRANSITIONS
EXCITATION
INFORMATION
INTERFERENCE
PROCESSING
QUANTUM INFORMATION
READOUT SYSTEMS
SIGNALS
SPIN WAVES