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

• URL: http://arxiv.org/abs/2207.02169v2
• Date: Mon, 19 Dec 2022 10:47:51 GMT
• Title: Proposal for spin squeezing in rare-earth ion-doped crystals with a four-color scheme
• Abstract summary: We investigate an interferometer-free four-color scheme to achieve spin squeezing of rare-earth ion-doped crystals. We show that up to 8 dB of spin squeezing can be obtained with readily accessible experimental resources.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

Related papers

• Super-Heisenberg protocol for dark matter and high-frequency gravitational wave search [0.0]
  We propose a quantum-enhanced sensing scheme for wave-like dark matter and high-frequency gravitational waves using two-dimensional ion crystals in a Penning trap.<n>The protocol employs spin-motion squeezed states to improve the signal-to-noise ratio and enable a super-Heisenberg scaling.<n>We analyze the sensitivity of the protocol to representative wave-like dark matter candidates, including the axion-like particle and the dark photon.
  arXiv  Detail & Related papers  (2026-04-24T08:09:07Z)
• High-throughput spin-bath characterization of spin-defects in semiconductors [0.0]
  Detailed knowledge of the local environments of spin-defects in semiconductors is crucial for optimizing control and entanglement protocols in quantum sensing and information applications.<n>In this work, we address the ill-posed inverse problem of recovering the atomic positions and hyperfine couplings of random nuclei surrounding spin-defects from sparse experimental coherence signals.<n>To address the challenge to determine the number of isotopic nuclear spins along with their hyperfine couplings, we employ a trans-dimensional Bayesian approach that incorporates ab initio data.<n>This approach provides posterior distributions of the numbers, hyperfine couplings, and locations of nuclear spins present in
  arXiv  Detail & Related papers  (2025-06-24T02:41:41Z)
• Spin squeezing in an ensemble of nitrogen-vacancy centers in diamond [6.338826024477338]
  We present the first experimental demonstration of spin squeezing in a solid-state spin system. Our results open the door to entanglement-enhanced metrology using macroscopic ensembles of optically active spins in solids.
  arXiv  Detail & Related papers  (2025-03-18T18:00:01Z)
• Spin Squeezing of Macroscopic Nuclear Spin Ensembles [44.99833362998488]
  Squeezing macroscopic spin ensembles may prove to be a useful technique for fundamental physics experiments.<n>We analyze the squeezing dynamics in the presence of decoherence and finite spin polarization, showing that achieving 7 dB spin squeezing is feasible in several nuclear spin systems.
  arXiv  Detail & Related papers  (2025-02-19T21:16:54Z)
• Quantum thermalization and Floquet engineering in a spin ensemble with a clock transition [3.55103790558995]
  We study an optically addressable solid-state spin system comprising a strongly interacting ensemble of millions of ytterbium-171 ions in a crystal. Our findings indicate that an ensemble of rare-earth ions serves as a versatile testbed for many-body physics and offers valuable insights for advancing quantum technologies.
  arXiv  Detail & Related papers  (2024-08-01T03:16:25Z)
• In-situ-tunable spin-spin interactions in a Penning trap with in-bore optomechanics [41.94295877935867]
  We present an optomechanical system for in-situ tuning of the coherent spin-motion and spin-spin interaction strength. We characterize the system using measurements of the induced mean-field spin precession. These experiments show approximately a $times2$ variation in the ratio of the coherent to incoherent interaction strength.
  arXiv  Detail & Related papers  (2024-01-31T11:00:39Z)
• Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!φ^4$ model [44.99833362998488]
  A quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins. These interactions can be accounted for by a long-wavelength relativistic theory, where the phonons are described by a coarse-grained Klein-Gordon field. We show that thermal effects, which can be controlled by laser cooling, can unveil this flow through the appearance of thermal masses in interacting QFTs.
  arXiv  Detail & Related papers  (2023-05-10T12:59:07Z)
• Phonon-Induced Decoherence in Color-Center Qubits [1.6280801141284873]
  Electron spin states of solid-state defects are a leading quantum-memory candidate for quantum communications and computing. We derive the time dynamics of the density operator of an electron-spin qubit. We use our model to corroborate experimentally-measured decoherence rates.
  arXiv  Detail & Related papers  (2023-05-08T21:11:24Z)
• Spin Squeezing as a Probe of Emergent Quantum Orders [0.0]
  We propose measurement of the spin-squeezing parameter that itself can act as a local probe of emergent orders in quantum materials. In particular, we demonstrate how to investigate an anisotropic electric field gradient via its coupling to the nuclear quadrupole moment.
  arXiv  Detail & Related papers  (2022-10-07T17:02:48Z)
• Room-temperature coherent optical manipulation of single-hole spins in solution-grown perovskite quantum dots [3.5994174958472316]
  Current systems either operate at very low temperatures or are difficult to scale-up. Here we report manipulation and readout of single-hole spins in an ensemble of solution-grown CsPbBr3 QDs. These operations accomplish nearly complete quantum-state control of single-hole spins at room temperature.
  arXiv  Detail & Related papers  (2022-08-24T15:32:24Z)
• Estimating the concentration of chiral media with bright squeezed light [77.34726150561087]
  We quantify the performance of Gaussian probes in estimating the concentration of chiral analytes. Four-fold precision enhancement is achievable using state-of-the-art squeezing levels and intensity measurements.
  arXiv  Detail & Related papers  (2022-08-21T17:18:10Z)
• Gate-based spin readout of hole quantum dots with site-dependent $g-$factors [101.23523361398418]
  We experimentally investigate a hole double quantum dot in silicon by carrying out spin readout with gate-based reflectometry. We show that characteristic features in the reflected phase signal arising from magneto-spectroscopy convey information on site-dependent $g-$factors in the two dots.
  arXiv  Detail & Related papers  (2022-06-27T09:07:20Z)
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
  We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators. We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure. The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
  arXiv  Detail & Related papers  (2021-05-27T18:00:02Z)
• Tunable Anderson Localization of Dark States [146.2730735143614]
  We experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system. We observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes. The experiment opens the door to the study of various localization phenomena on a new platform.
  arXiv  Detail & Related papers  (2021-05-25T07:52:52Z)
• Ancilla mediated qubit readout and heralded entanglement between rare-earth dopant ions in crystals [68.8204255655161]
  We show how a Bayesian analysis exhausts the information about the state of the qubit from the optical signal of the ancilla ion. We extend the architecture to ions residing in two remote cavities, and we show how continuous monitoring of fluorescence signals from the two ancilla ions leads to entanglement of the qubit ions.
  arXiv  Detail & Related papers  (2020-07-06T16:31:46Z)
• The limit of spin lifetime in solid-state electronic spins [77.34726150561087]
  We provide a complete first-principles picture of spin relaxation that includes up to two-phonon processes. We study a vanadium-based molecular qubit and reveal that the spin lifetime at high temperature is limited by Raman processes.
  arXiv  Detail & Related papers  (2020-04-08T14:27:36Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.