Optimal Strategies for Optical Quantum Memories Using Long-Lived Noble-Gas Spins
arXiv:2007.08770 · doi:10.1103/xt9b-yq8q
Abstract
Nuclear spins of noble gases exhibit exceptionally long coherence times and can potentially serve as a long-lived storage medium for quantum information. We analyze and compare the performance of two mechanisms for mapping the quantum state of light onto the collective spin state of noble gases. The first mechanism utilizes collisional exchange with the electronic spin state of metastable noble-gas atoms, while the second relies on spin-exchange collisions with ground-state alkali-metal atoms. We describe the operation of an optical quantum memory relying on these two mechanisms using a compact model and study strategies that optimize the memory storage efficiency. Through numerical simulations, we identify optimal sequences for storing optical signals with different signal bandwidths and electronic spin relaxation rates. This work highlights the qualitative difference between the two approaches for using noble gases as long-lived quantum memories at non-cryogenic conditions and outlines the regimes in which they are expected to be efficient.
References in corpus (36)
- Storage of light in atomic vapor
- Optical Magnetometry
- Quantum interface between light and atomic ensembles
- Optical Quantum Computing
- Experimental demonstration of quantum memory for light
- Quantum memories: emerging applications and recent advances
- Universal Approach to Optimal Photon Storage in Atomic Media
- High efficiency coherent optical memory with warm rubidium vapour
- Photon storage in Lambda-type optically dense atomic media. II. Free-space model
- Photon storage in Lambda-type optically dense atomic media. I. Cavity model
- Optically Polarized He
- Quantum memory for entangled two-mode squeezed states
- Light storage for one second at room temperature
- Ultra-sensitive magnetometry based on free precession of nuclear spins
- Optimal light storage in atomic vapor
- A Cavity-Enhanced Room-Temperature Broadband Raman Memory
- Single Photons Made-to-Measure
- Photon storage in Lambda-type optically dense atomic media. IV. Optimal control using gradient ascent
- Light storage in an optically thick atomic ensemble under conditions of electromagnetically induced transparency and four-wave mixing
- Efficient quantum memory and entanglement between light and an atomic ensemble using magnetic fields
- Strong coupling of alkali spins to noble-gas spins with hour-long coherence time
- Room-temperature single-photon source with near-millisecond built-in memory
- Long-lived entanglement generation of nuclear spins using coherent light
- Light Qubit Storage and Retrieval using Macroscopic Atomic Ensembles
- Quantum interface for noble-gas spins based on spin-exchange collisions
- Long-lived quantum memory with nuclear atomic spins
- Quantum Dynamics of Collective Spin States in a Thermal Gas
- Induced cavities for photonic quantum gates
- Hamiltonian design in readout from room-temperature Raman atomic memory
- Nuclear spin squeezing in Helium-3 by continuous quantum nondemolition measurement
- Slow light propagation and amplification via electromagnetically induced transparency and four-wave mixing in an optically dense atomic vapor
- Optical quantum memory for noble-gas spins based on spin-exchange collisions
- Gaussian-wavepacket-model for single-photon generation based on cavity QED in the adiabatic and nonadiabatic conditions
- Squeezing and entangling nuclear spins in helium 3
- Suppression of Four-Wave Mixing in Hot Rubidium Vapor Using Ladder Scheme Raman Absorption
- Fast storage of photons in cavity-assisted quantum memories