6533b820fe1ef96bd1279aab
RESEARCH PRODUCT
Phase Locking between Two All-Optical Quantum Memories.
Fumiya OkamotoMamoru EndoRei SakakibaraYuya IshizukaPeter Van LoockMikihisa MatsuyamaAkira FurusawaYosuke HashimotoJun-ichi YoshikawaYang Liusubject
PhysicsQuantum PhysicsMulti-mode optical fiberbusiness.industryPhase (waves)FOS: Physical sciencesPhysics::OpticsGeneral Physics and AstronomyQuantum entanglement01 natural sciencesDirect-conversion receiverQuantum stateQuantum mechanics0103 physical sciencesPhotonicsQuantum Physics (quant-ph)010306 general physicsbusinessQuantumQuantum computerdescription
Optical approaches to quantum computation require the creation of multi-mode photonic quantum states in a controlled fashion. Here we experimentally demonstrate phase locking of two all-optical quantum memories, based on a concatenated cavity system with phase reference beams, for the time-controlled release of two-mode entangled single-photon states. The release time for each mode can be independently determined. The generated states are characterized by two-mode optical homodyne tomography. Entanglement and nonclassicality are preserved for release-time differences up to 400 ns, confirmed by logarithmic negativities and Wigner-function negativities, respectively.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-09-14 | Physical review letters |