Interfacing a two-photon NOON state with an atomic quantum memory
arXiv:1701.03317 · doi:10.1103/PhysRevA.98.063820
Abstract
Multi-photon entangled states play a crucial role in quantum information applications such as secure quantum communication, scalable computation, and high-precision quantum metrology. Quantum memory for entangled states is a key component of quantum repeaters, which are indispensable in realizing quantum communications. Storing a single photon or an entangled photon has been realized through different protocols. However, there has been no report demonstrating whether a multi-photon state can be stored in any physical system or not. Here, we report on the experimental storage of a two-photon NOON state in a cold atomic ensemble. Quantum interference measured before and after storage clearly shows that the properties of the two-photon NOON state are preserved during storage. Our experiment completes the first step towards storing a multi-photon entangled state.
comments are welcome
References in corpus (15)
- Quantum Optical Metrology -- The Lowdown on High-N00N States
- Beating the Standard Quantum Limit with Four Entangled Photons
- Experimental ten-photon entanglement
- Mapping photonic entanglement into and out of a quantum memory
- Quantum Storage of Photonic Entanglement in a Crystal
- Universal Approach to Optimal Photon Storage in Atomic Media
- 'Designer atoms' for quantum metrology
- Quantum Storage of Orbital Angular Momentum Entanglement in an Atomic Ensemble
- Magnetic field sensing beyond the standard quantum limit using 10-spin NOON states
- A millisecond quantum memory for scalable quantum networks
- Highly efficient coherent optical memory based on electromagnetically induced transparency
- Mapping broadband single-photon wavepackets into an atomic memory
- Storage and retrieval of ultrafast single photons using a room-temperature diamond quantum memory
- Optimal Storage and Retrieval of Single-Photon Waveforms
- Efficient spatially-resolved multimode quantum memory