Long-lived quantum memory with nuclear atomic spins

Details Long-lived quantum memory with nuclear atomic spins Long-lived quantum memory with nuclear atomic spins

2005-04-20

arxiv.org/abs/quant-ph/0504152v2

Physical Review Letters 95 (2005) 123002

Physics

Quantum Physics

4 pages

Scientific paper

10.1103/PhysRevLett.95.123002

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).

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