Composite Biased Rotations for Precise Raman Control of Spinor Matterwaves

• URL: http://arxiv.org/abs/2305.17610v2
• Date: Tue, 30 May 2023 00:30:45 GMT
• Title: Composite Biased Rotations for Precise Raman Control of Spinor Matterwaves
• Authors: Liyang Qiu, Haidong Yuan and Saijun Wu
• Abstract summary: We show that composite biased rotations can be optimized to enable precise ensemble spinor matterwave control within nanoseconds. Our scheme fills a technical gap in light pulse atom interferometry, for achieving high speed Raman spinor matterwave control with moderate laser power.
• Score: 0.4511923587827302
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Precise control of hyperfine matterwaves via Raman excitations is instrumental to a class of atom-based quantum technology. We investigate the Raman spinor control technique for alkaline atoms in an intermediate regime of single-photon detuning where a choice can be made to balance the Raman excitation power efficiency with the control speed, excited-state adiabatic elimination, and spontaneous emission suppression requirements. Within the regime, rotations of atomic spinors by the Raman coupling are biased by substantial light shifts. Taking advantage of the fixed bias angle, we show that composite biased rotations can be optimized to enable precise ensemble spinor matterwave control within nanoseconds, even for multiple Zeeman pseudo-spins defined on the hyperfine ground states and when the laser illumination is strongly inhomogeneous. Our scheme fills a technical gap in light pulse atom interferometry, for achieving high speed Raman spinor matterwave control with moderate laser power.

Related papers

• Ultra-high strained diamond spin register with coherent optical link [45.40010446596688]
  Solid-state spin defects, such as color centers in diamond, are among the most promising candidates for scalable and integrated quantum technologies. We show that leveraging an ultra-high strained silicon-vacancy center inside a nanodiamond allows us to coherently and efficiently control its electron spin, while mitigating phonon-induced dephasing at liquid helium temperature. Our work paves the way for future integration of quantum network registers into conventional, well-established photonics and hybrid quantum communication systems.
  arXiv  Detail & Related papers  (2024-09-19T10:46:24Z)
• 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)
• Enhancing strontium clock atom interferometry using quantum optimal control [0.09786690381850353]
  We study QOC pulses for strontium clock interferometry and demonstrate their advantage over basic square pulses. This could improve the scale of large momentum transfer in Sr clock interferometers, paving the way to achieve scientific goals.
  arXiv  Detail & Related papers  (2022-07-26T23:56:33Z)
• Spinor matterwave control with nanosecond spin-dependent kicks [0.8155575318208631]
  Quantum technology relies on rapid control of atomic matterwaves with hyperfine Raman transitions. These transitions are accompanied by uncompensated dynamic phases and coherent spin-leakages. We program an adiabatic pulse sequence to overcome these limitations.
  arXiv  Detail & Related papers  (2022-02-20T01:57:32Z)
• Generalized hyper-Ramsey-Bord\'e matter-wave interferometry: quantum engineering of robust atomic sensors with composite pulses [0.0]
  A new class of atomic interferences using ultra-narrow optical transitions are pushing quantum engineering control to a very high level of precision. We propose a new quantum engineering approach to Ramsey-Bord'e interferometry introducing multiple composite laser pulses with tailored pulse duration, Rabi field amplitude, frequency detuning and laser phase-step.
  arXiv  Detail & Related papers  (2022-02-13T12:30:07Z)
• Quantum control of nuclear spin qubits in a rapidly rotating diamond [62.997667081978825]
  Nuclear spins in certain solids couple weakly to their environment, making them attractive candidates for quantum information processing and inertial sensing. We demonstrate optical nuclear spin polarization and rapid quantum control of nuclear spins in a diamond physically rotating at $1,$kHz, faster than the nuclear spin coherence time. Our work liberates a previously inaccessible degree of freedom of the NV nuclear spin, unlocking new approaches to quantum control and rotation sensing.
  arXiv  Detail & Related papers  (2021-07-27T03:39:36Z)
• Anisotropic electron-nuclear interactions in a rotating quantum spin bath [55.41644538483948]
  Spin-bath interactions are strongly anisotropic, and rapid physical rotation has long been used in solid-state nuclear magnetic resonance. We show that the interaction between electron spins of nitrogen-vacancy centers and a bath of $13$C nuclear spins introduces decoherence into the system. Our findings offer new insights into the use of physical rotation for quantum control with implications for quantum systems having motional and rotational degrees of freedom that are not fixed.
  arXiv  Detail & Related papers  (2021-05-16T06:15:00Z)
• Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear qudit with an electronic ancilla [50.002949299918136]
  We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system suitable to implement quantum computation algorithms. It embeds an electronic spin 1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both characterized by remarkable coherence.
  arXiv  Detail & Related papers  (2021-03-15T21:38:41Z)
• Fast high-fidelity single-qubit gates for flip-flop qubits in silicon [68.8204255655161]
  flip-flop qubit is encoded in the states with antiparallel donor-bound electron and donor nuclear spins in silicon. We study the multilevel system that is formed by the interacting electron and nuclear spins. We propose an optimal control scheme that produces fast and robust single-qubit gates in the presence of low-frequency noise.
  arXiv  Detail & Related papers  (2021-01-27T18:37:30Z)
• Optimal control of a nitrogen-vacancy spin ensemble in diamond for sensing in the pulsed domain [52.77024349608834]
  Defects in solid state materials provide an ideal platform for quantum sensing. Control of such an ensemble is challenging due to the spatial variation in both the defect energy levels and in any control field across a macroscopic sample. We experimentally demonstrate that we can overcome these challenges using Floquet theory and optimal control optimization methods.
  arXiv  Detail & Related papers  (2021-01-25T13:01:05Z)
• Hyper Ramsey-Bord\'e matter-wave interferometry for robust quantum sensors [0.0]
  A new generation of atomic sensors using ultra-narrow optical clock transitions and composite pulses are pushing quantum engineering control to a very high level of precision. We propose a new version of Ramsey-Bord'e interferometry introducing arbitrary composite laser pulses with tailored pulse duration, Rabi field, detuning and phase-steps. We present, for the first time, new developments for robust hyper Ramsey-Bord'e and Mach-Zehnder interferometers.
  arXiv  Detail & Related papers  (2020-12-07T17:47:28Z)
• Deterministic single-atom source of quasi-superradiant $N$-photon pulses [62.997667081978825]
  Scheme operates with laser and cavity fields detuned from the atomic transition by much more than the excited-state hyperfine splitting. This enables reduction of the dynamics to that of a simple, cavity-damped Tavis-Cummings model with the collective spin determined by the total angular momentum of the ground hyperfine level.
  arXiv  Detail & Related papers  (2020-12-01T03:55:27Z)

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.