Quantum interface for noble-gas spins based on spin-exchange collisions
arXiv:1905.12532 · doi:10.1103/PRXQuantum.3.010305
Abstract
An ensemble of noble-gas nuclear spins is a unique quantum system that could maintain coherence for many hours at room temperature and above, owing to exceptional isolation from the environment. This isolation, however, is a mixed blessing, limiting the ability of these ensembles to interface with other quantum systems coherently. Here we show that spin-exchange collisions with alkali-metal atoms render a quantum interface for noble-gas spins without impeding their long coherence times. We formulate the many-body theory of the hybrid system and reveal a collective mechanism that strongly couples the macroscopic quantum states of the two spin ensembles. Despite their stochastic and random nature, weak collisions enable entanglement and reversible exchange of nonclassical excitations in an efficient, controllable, and deterministic process. With recent experiments now entering the strong-coupling regime, this interface paves the way towards realizing hour-long quantum memories and entanglement at room-temperature.
O.K. and R.S. contributed equally
References in corpus (12)
- Quantum teleportation between light and matter
- Measurements with prediction and retrodiction on the collective spin of 10^{11} atoms beat the standard quantum limit
- Quantum Interface of an Electron and a Nuclear Ensemble
- He-Xe Comagnetometery using Rb Detection and Decoupling
- Generation of a squeezed state of an oscillator by stroboscopic back-action-evading measurement
- Entanglement between Distant Macroscopic Mechanical and Spin Systems
- Long-lived entanglement generation of nuclear spins using coherent light
- Quantum Dynamics of Collective Spin States in a Thermal Gas
- Sub-Shot-Noise Magnetometry with a Correlated Spin-Relaxation Dominated Alkali-Metal Vapor
- Coupling light to a nuclear spin gas with a two-photon linewidth of five millihertz
- Optical quantum memory for noble-gas spins based on spin-exchange collisions
- Optimal Strategies for Optical Quantum Memories Using Long-Lived Noble-Gas Spins
Cited by in corpus (18)
- Ultrasensitive atomic comagnetometer with enhanced nuclear spin coherence
- Constraints on axion-like dark matter from a SERF comagnetometer
- Strong coupling of alkali spins to noble-gas spins with hour-long coherence time
- Hot atomic vapors for nonlinear and quantum optics
- Effects of spin-exchange collisions on the fluctuation spectra of hot alkali-metal vapors
- Optical quantum memory for noble-gas spins based on spin-exchange collisions
- Inter-species spin-noise correlations in hot atomic vapors
- Critical dynamics and phase transition of a strongly interacting warm spin-gas
- Spin noise spectroscopy of an alignment-based atomic magnetometer
- Anomalous noise spectra in a spin-exchange-relaxation-free alkali-metal vapor
- Zero-field spin noise spectrum of an alkali vapor with strong spin-exchange coupling
- Pulsed Dual-axis Alkali-metal-noble-gas Comagnetometer
- Hyperfine structure and collisions in three-photon Rydberg electromagnetically induced transparency
- Optical protection of alkali-metal atoms from spin relaxation
- Nuclear spin squeezing by continuous quantum non-demolition measurement: a theoretical study
- Semiclassical Spin Exchange via Temperature-Dependent Transition States
- Nuclear Spin Squeezing Based on Spin-Exchange Collisions
- Optimal Strategies for Optical Quantum Memories Using Long-Lived Noble-Gas Spins