Long-lived quantum memory with nuclear atomic spins

Abstract

We propose to store non-classical states of light into the macroscopic collective nuclear spin ($10^{18}$ atoms) of a ${}^3$He vapor, using metastability exchange collisions. These collisions, commonly used to transfer orientation from the metastable state $2^{3}S\_1$ to the ground state state of ${}^3$He, can also transfer quantum correlations. This gives a possible experimental scheme to map a squeezed vacuum field state onto a nuclear spin state with very long storage times (hours).

4 pages

References in corpus (6)

• Experimental demonstration of quantum memory for light
• Squeezing in the audio gravitational wave detection band
• Quantum state transfer between field and atoms in Electromagnetically Induced Transparency
• Compact Source of EPR Entanglement and Squeezing at Very Low Noise Frequencies
• Teleportation of an atomic ensemble quantum state
• Entanglement storage in atomic ensembles

Cited by in corpus (21)

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• Strong coupling of alkali spins to noble-gas spins with hour-long coherence time
• Long-lived entanglement generation of nuclear spins using coherent light
• Quantum interface for noble-gas spins based on spin-exchange collisions
• Dynamics of a pulsed continuous variable quantum memory
• Nuclear spin squeezing in Helium-3 by continuous quantum nondemolition measurement
• Quantum entanglement and disentanglement of multi-atom systems
• 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
• Spin-squeezed states for metrology
• Squeezing and entangling nuclear spins in helium 3
• Zero-field spin noise spectrum of an alkali vapor with strong spin-exchange coupling
• Short cycle pulse sequence for dynamical decoupling of local fields and dipole-dipole interactions
• Enhanced coupling of electron and nuclear spins by quantum tunneling resonances
• Coherence-preserving cooling of nuclear spin qubits in a weak magnetic field
• Dipolar Relaxation Mechanism of Long Lived States in Methyl Groups
• Nuclear Spin Squeezing Based on Spin-Exchange Collisions
• Nuclear spin squeezing by continuous quantum non-demolition measurement: a theoretical study
• Optimal Strategies for Optical Quantum Memories Using Long-Lived Noble-Gas Spins