Phase Locking between Two All-Optical Quantum Memories
arXiv:2009.06811 · doi:10.1103/PhysRevLett.125.260508
Abstract
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.
arXiv comment15 pages, 15 figures
References in corpus (24)
- A computable measure of entanglement
- The logarithmic negativity: A full entanglement monotone that is not convex
- Encoding a qubit in an oscillator
- Quantum computation over continuous variables
- Ultra-Large-Scale Continuous-Variable Cluster States Multiplexed in the Time Domain
- Quantum Storage of Photonic Entanglement in a Crystal
- Time-Domain Multiplexed 2-Dimensional Cluster State: Universal Quantum Computing Platform
- Deterministic generation of a two-dimensional cluster state
- Generation of one-million-mode continuous-variable cluster state by unlimited time-domain multiplexing
- Bosonic Quantum Codes for Amplitude Damping
- Heralded quantum entanglement between two crystals
- Implementation of a quantum cubic gate by adaptive non-Gaussian measurement
- Tomography of a High-Purity Narrowband Photon From a Transient Atomic Collective Excitation
- Heralded Storage of a Photonic Quantum Bit in a Single Atom
- Homodyne tomography of a single photon retrieved on demand from a cavity-enhanced cold atom memory
- Experimentally accessing the optimal temporal mode of traveling quantum light states
- Creation, storage, and on-demand release of optical quantum states with a negative Wigner function
- Quantum error correction against photon loss using NOON states
- Synchronization of optical photons for quantum information processing
- Quantum correlations between single telecom photons and a multimode on-demand solid state quantum memory
- Universal quantum computation with temporal-mode bilayer square lattices
- Quantum storage of single-photon and two-photon Fock states with an all-optical quantum memory
- All-optical storage of phase-sensitive quantum states of light
- Heralded creation of photonic qudits from parametric down conversion using linear optics