Focus on Quantum Memories

Abstract

Quantum memories are essential for quantum information processing and long-distance quantum communication. The field has recently seen a lot of progress, and the present focus issue offers a glimpse of these developments, showing both experimental and theoretical results from many of the leading groups around the world. On the experimental side, it shows work on cold gases, warm vapors, rare-earth ion doped crystals and single atoms. On the theoretical side there are in-depth studies of existing memory protocols, proposals for new protocols including approaches based on quantum error correction, and proposals for new applications of quantum storage. Looking forward, we anticipate many more exciting results in this area.

4 pages, no figures; editorial for NJP focus issue on quantum memories

References in corpus (50)

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• Quantum interface between light and atomic ensembles
• Heralded entanglement between solid-state qubits separated by 3 meters
• Quantum Error Correction for Beginners
• Local stabilizer codes in three dimensions without string logical operators
• Large Scale Modular Quantum Computer Architecture with Atomic Memory and Photonic Interconnects
• Storing quantum information for 30 seconds in a nanoelectronic device
• Broadband waveguide quantum memory for entangled photons
• Unconditional quantum teleportation between distant solid-state qubits
• A quantum memory for orbital angular momentum photonic qubits
• Quantum Storage of Photonic Entanglement in a Crystal
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• State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
• Room temperature quantum bit storage exceeding 39 minutes using ionized donors in 28-silicon
• Spectral multiplexing for scalable quantum photonics using an atomic frequency comb quantum memory and feed-forward control
• Quantum teleportation from a telecom-wavelength photon to a solid-state quantum memory
• Hybrid circuit cavity quantum electrodynamics with a micromechanical resonator
• Prospective applications of optical quantum memories
• Single-Photon-Level Quantum Image Memory Based on Cold Atomic Ensembles
• Efficient quantum memory using a weakly absorbing sample
• Coherent Optical Memory with High Storage Efficiency and Large Fractional Delay
• Deterministic quantum teleportation between distant atomic objects
• Quantum Teleportation from a Propagating Photon to a Solid-State Spin Qubit
• Heralded quantum entanglement between two crystals
• All-optical quantum information processing using Rydberg gates
• Entanglement over global distances via quantum repeaters with satellite links
• Homodyne tomography of a single photon retrieved on demand from a cavity-enhanced cold atom memory
• Coherent Storage of Temporally Multimode Light Using a Spin-Wave Atomic Frequency Comb Memory
• Gradient echo memory in an ultra-high optical depth cold atomic ensemble
• An integrated processor for photonic quantum states using a broadband light-matter interface
• Proposal for a coherent quantum memory for propagating microwave photons
• Proposal for the Creation and Optical Detection of Spin Cat States in Bose-Einstein Condensates
• Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory
• A high-rate source for single photons in a pure quantum state
• Cavity enhanced storage - preparing for high efficiency quantum memories
• Photon-photon gates in Bose-Einstein condensates
• A quantum detector for photon entanglement
• Scalable time reversal of Raman echo quantum memory and quantum waveform conversion of light pulse
• An efficient quantum memory based on two-level atoms
• Heralded Mapping of Photonic Entanglement into Single Atoms in Free Space: Proposal for a Loophole-Free Bell Test
• Holonomic quantum computing in symmetry-protected ground states of spin chains
• Securing coherence rephasing with a pair of adiabatic rapid passages
• Dynamics of the reading process of a quantum memory
• Analysis of a photon number resolving detector based on an ion Coulomb crystal inside an optical cavity
• Proposal for a loophole-free Bell test based on spin-photon interactions in cavities
• Quantum Memory with a controlled homogeneous splitting
• Gauge subsystems, separability, and robustness in autonomous quantum memories
• Quantum Storage and Retrieval of Light by Sweeping the Atomic Frequency
• Spatially Addressable Readout and Erasure of an Image in a Gradient Echo Memory
• High-speed quantum networking by ship

Cited by in corpus (15)

• On the waiting time in quantum repeaters with probabilistic entanglement swapping
• Satellite-based Quantum Information Networks: Use cases, Architecture, and Roadmap
• Experimental investigation of practical unforgeable quantum money
• Zero-dynamics principle for perfect quantum memory in linear networks
• Entanglement sudden death and birth effects in two qubits maximally entangled mixed states under quantum channels
• Quantum Process Capability
• Stopped and stationary light at the single-photon level inside a hollow-core fiber
• Equilibration and nonclassicality of a double-well potential
• Setting a disordered password on a photonic memory
• Quasi-Fine-Grained Uncertainty Relations
• Perfect state transfer on hypercubes and its implementation using superconducting qubits
• Quantifying entanglement preservability of experimental processes
• Quantum Memory and Quantum Cloning in Atomic Frequency Comb
• Perpetual emulation threshold of PT-symmetric Hamiltonians
• Broad Spiral-Bandwidth of Orbital Angular Momentum Interface between Photon and Memory