Nuclear spin squeezing in Helium-3 by continuous quantum nondemolition measurement
arXiv:2012.07216 · doi:10.1103/PhysRevLett.127.013601
Abstract
We propose a technique to control the macroscopic collective nuclear spin of a Helium-3 vapor in the quantum regime using light. The scheme relies on metastability exchange collisions to mediate interactions between optically accessible metastable states and the ground-state nuclear spin, giving rise to an effective nuclear spin-light quantum nondemolition interaction of the Faraday form. Our technique enables measurement-based quantum control of nuclear spins, such as the preparation of spin-squeezed states. This, combined with the day-long coherence time of nuclear spin states in Helium-3, opens the possibility for a number of applications in quantum technology.
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- Enhanced coupling of electron and nuclear spins by quantum tunneling resonances
- Decoherence effects in quantum nondemolition measurement induced entanglement between Bose-Einstein condensates
- Stroboscopic quantum nondemolition measurements for enhanced entanglement generation between atomic ensembles
- Magnetic-field-independent spin-exchange relaxation-free magnetometer
- Optimal Strategies for Optical Quantum Memories Using Long-Lived Noble-Gas Spins
- Nuclear Spin Squeezing Based on Spin-Exchange Collisions
- Deterministic nuclear spin squeezing and squeezing by continuous measurement using vector and tensor light shifts
- Superradiant Interactions for Relic Detection with Entangled Nuclear Spins
- Optimal spin- and planar-quantum squeezing in superpositions of spin coherent states