Quantum Non-Demolition Measurement on the Spin Precession of Laser-Trapped $^{171}$Yb Atoms

• URL: http://arxiv.org/abs/2209.08218v1
• Date: Sat, 17 Sep 2022 02:19:26 GMT
• Title: Quantum Non-Demolition Measurement on the Spin Precession of Laser-Trapped $^{171}$Yb Atoms
• Authors: Y. A. Yang, T. A. Zheng, S.-Z. Wang, W.-K. Hu, Chang-Ling Zou, T. Xia, and Z.-T. Lu
• Abstract summary: Quantum non-demolition (QND) measurement enhances the detection efficiency and measurement fidelity. We propose and demonstrate a QND measurement scheme for the spin states of laser-trapped atoms.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum non-demolition (QND) measurement enhances the detection efficiency and measurement fidelity, and is highly desired for its applications in precision measurements and quantum information processing. We propose and demonstrate a QND measurement scheme for the spin states of laser-trapped atoms. On $^{171}$Yb atoms held in an optical dipole trap, a transition that is simultaneously cycling, spin-state selective, and spin-state preserving is created by introducing a circularly polarized beam of control laser to optically dress the spin states in the excited level, while leaving the spin states in the ground level unperturbed. We measure the phase of spin precession of $5\times10^{4}$ atoms in a bias magnetic field of 20 mG. This QND approach reduces the optical absorption detection noise by $\sim$19 dB, to a level of 2.3 dB below the atomic quantum projection noise. In addition to providing a general approach for efficient spin-state readout, this all-optical technique allows quick switching and real-time programming for quantum sensing and quantum information processing.

Related papers

• All-optical ultrafast arbitrary rotation of hole orbital qubits with direct phase control [18.591036146528445]
  orbital degree of freedom in optically active quantum dots has emerged as a promising candidate. We demonstrate arbitrary rotation of a hole orbital qubit with direct phase control using picosecond optical pulses. Results establish orbital states in solid-state quantum emitters as a viable resource for applications in high-speed quantum information processing.
  arXiv  Detail & Related papers  (2024-03-22T15:40:59Z)
• Experimental Observation of Earth's Rotation with Quantum Entanglement [0.0]
  We present a table-top experiment using maximally path-entangled quantum states of light in an interferometer with an area of 715 m$2$. The achieved sensitivity of 5 $mu$rad/s constitutes the highest rotation resolution ever achieved with optical quantum interferometers.
  arXiv  Detail & Related papers  (2023-10-25T18:01:23Z)
• Design and simulation of a transmon qubit chip for Axion detection [103.69390312201169]
  Device based on superconducting qubits has been successfully applied in detecting few-GHz single photons via Quantum Non-Demolition measurement (QND) In this study, we present Qub-IT's status towards the realization of its first superconducting qubit device.
  arXiv  Detail & Related papers  (2023-10-08T17:11:42Z)
• Finite Pulse-Time Effects in Long-Baseline Quantum Clock Interferometry [45.73541813564926]
  We study the interplay of the quantum center-of-mass $-$ that can become delocalized $-$ together with the internal clock transitions. We show at the example of a Gaussian laser beam that the proposed quantum-clock interferometers are stable against perturbations from varying optical fields.
  arXiv  Detail & Related papers  (2023-09-25T18:00:03Z)
• Quantum-enhanced sensing on an optical transition via emergent collective quantum correlations [0.0]
  We show how to harness scalable entanglement in an optical transition using 1D chains of up to 51 ions with state-dependent interactions that decay as a power-law function of the ion separation. We demonstrate this in a Ramsey-type interferometer, where we reduce the measurement uncertainty by $-3.2 pm 0.5$ dB below the standard quantum limit for N = 51 ions.
  arXiv  Detail & Related papers  (2023-03-19T15:41:32Z)
• Integrated Quantum Optical Phase Sensor [48.7576911714538]
  We present a photonic integrated circuit fabricated in thin-film lithium niobate. We use the second-order nonlinearity to produce a squeezed state at the same frequency as the pump light and realize circuit control and sensing with electro-optics. We anticipate that on-chip photonic systems like this, which operate with low power and integrate all of the needed functionality on a single die, will open new opportunities for quantum optical sensing.
  arXiv  Detail & Related papers  (2022-12-19T18:46:33Z)
• All-Optical Nuclear Quantum Sensing using Nitrogen-Vacancy Centers in Diamond [52.77024349608834]
  Microwave or radio-frequency driving poses a significant limitation for miniaturization, energy-efficiency and non-invasiveness of quantum sensors. We overcome this limitation by demonstrating a purely optical approach to coherent quantum sensing. Our results pave the way for highly compact quantum sensors to be employed for magnetometry or gyroscopy applications.
  arXiv  Detail & Related papers  (2022-12-14T08:34:11Z)
• Cavity-enhanced single-shot readout of a quantum dot spin within 3 nanoseconds [0.45507178426690204]
  We demonstrate single-shot readout of a semiconductor quantum dot spin state. In our approach, semiconductor quantum dots are embedded in an open microcavity. We achieve single-shot readout of an electron spin state in 3 nanoseconds with a fidelity of (95.2$pm$0.7)%.
  arXiv  Detail & Related papers  (2022-10-25T09:45:49Z)
• Quantum-limited millimeter wave to optical transduction [50.663540427505616]
  Long distance transmission of quantum information is a central ingredient of distributed quantum information processors. Current approaches to transduction employ solid state links between electrical and optical domains. We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
  arXiv  Detail & Related papers  (2022-07-20T18:04:26Z)
• Energy-efficient quantum non-demolition measurement with a spin-photon interface [0.0]
  We study the potential of a SPI for quantum non demolition (QND) measurements of a spin state. We show that quantum superpositions of zero and single photon states outperform coherent pulses of light. The proposed schemes are robust against imperfections in state of the art semi-conducting devices.
  arXiv  Detail & Related papers  (2022-05-19T15:38:18Z)
• Dispersive optical systems for scalable Raman driving of hyperfine qubits [45.82374977939355]
  We introduce a new method for generating amplitude modulation by phase modulating a laser. This approach is passively stable, offers high efficiency, and is compatible with high-power laser sources. We benchmark this new approach by globally driving an array of $sim 300$ neutral $87$Rb atomic qubits trapped in optical tweezers.
  arXiv  Detail & Related papers  (2021-10-27T18:00:00Z)

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.