Proposal for spin squeezing in rare-earth ion-doped crystals with a four-color scheme

Abstract

Achieving spin squeezing within solid-state devices is a long standing research goal, due to the promise of their particularities, for instance their long coherence times, the possibility of low-temperature experiments or integration of entanglement-assisted sensors on-chip. In this work, we investigate an interferometer-free four-color scheme to achieve spin squeezing of rare-earth ion-doped crystals. The proposal relies on an analytic derivation that starts from a Tavis-Cummings model for light-matter interaction, providing microscopic insights onto spin-squeezing generation. We evidence spin squeezing signature in the light intensity variance. We consider the two particular cases of europium- and praseodymium-doped yttrium orthosilicates, workhorses of quantum technology developments. We show that up to 8 dB of spin squeezing can be obtained with readily accessible experimental resources, including noise due to photon scattering. Our results for rare-earth ion-doped crystals add to promising properties of these platforms for manipulating many-body entangled states and for high-precision measurements.

References in corpus (40)

• Entanglement detection
• Quantum metrology with nonclassical states of atomic ensembles
• Nonlinear atom interferometer surpasses classical precision limit
• Atom chip based generation of entanglement for quantum metrology
• Squeezing and entanglement in a Bose-Einstein condensate
• Broadband waveguide quantum memory for entangled photons
• Quantum spin dynamics and entanglement generation with hundreds of trapped ions
• Quantum noise limited and entanglement-assisted magnetometry
• Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit
• Dressed Collective Qubit States and the Tavis-Cummings Model in Circuit QED
• Dispersive regime of circuit QED: photon-dependent qubit dephasing and relaxation rates
• Coherence time of over a second in a telecom-compatible quantum memory storage material
• Spin squeezing and entanglement
• One-hour coherent optical storage in an atomic frequency comb memory
• Qubit-oscillator dynamics in the dispersive regime: analytical theory beyond rotating-wave approximation
• Advanced holeburning techniques for determination of hyperfine transition properties in inhomogeneously broadened solids applied to Pr3+:Y2SiO5
• Coherent spin control at the quantum level in an ensemble-based optical memory
• Quantum Storage of Frequency-Multiplexed Heralded Single Photons
• Response of the Strongly-Driven Jaynes-Cummings Oscillator
• Spin squeezing and precision probing with light and samples of atoms in the gaussian approximation
• Storage of photonic time-bin qubits for up to 20 ms in a rare-earth doped crystal
• Multi-mode and long-lived quantum correlations between photons and spins in a crystal
• Light-Matter Quantum Interface
• Magnon-squeezing as a niche of quantum magnonics
• Entanglement between a telecom photon and an on-demand multimode solid-state quantum memory
• Optical storage for 0.53 seconds in a solid-state atomic frequency comb memory using dynamical decoupling
• Polarization-based Light-Atom Quantum Interface with an All-optical Trap
• An integrated processor for photonic quantum states using a broadband light-matter interface
• Spin squeezing of atomic ensembles by multi-colour quantum non-demolition measurements
• On-demand storage of photonic qubits at telecom wavelengths
• Multimode capacity of atomic-frequency comb quantum memories
• A long-lived solid-state optical quantum memory for high-rate quantum repeaters
• The observation of photon echoes from evanescently coupled rare-earth ions in a planar waveguide
• Time Entanglement between a Photon and a Spin Wave in a Multimode Solid-state Quantum Memory
• Storage and analysis of light-matter entanglement in a fibre-integrated system
• Conditions for spin squeezing in a cold 87Rb ensemble
• Characterization of the hyperfine interaction of the excited ${}^5$D${}_0$ state of Eu${}^{3+}$:Y${}_2$SiO${}_5$
• Optical and spin manipulation of non-Kramers rare-earth ions under weak magnetic field for quantum memory applications
• Double-heterodyne probing for ultra-stable laser based on spectral hole burning in a rare-earth doped crystal
• Quantum-enhanced phase estimation using optical spin squeezing