Composite pulses for interferometry in a thermal cold atom cloud
arXiv:1406.2916 · doi:10.1103/PhysRevA.90.033608
Abstract
Atom interferometric sensors and quantum information processors must maintain coherence while the evolving quantum wavefunction is split, transformed and recombined, but suffer from experimental inhomogeneities and uncertainties in the speeds and paths of these operations. Several error-correction techniques have been proposed to isolate the variable of interest. Here we apply composite pulse methods to velocity-sensitive Raman state manipulation in a freely-expanding thermal atom cloud. We compare several established pulse sequences, and follow the state evolution within them. The agreement between measurements and simple predictions shows the underlying coherence of the atom ensemble, and the inversion infidelity in an 80 micro-Kelvin atom cloud is halved. Composite pulse techniques, especially if tailored for atom interferometric applications, should allow greater interferometer areas, larger atomic samples and longer interaction times, and hence improve the sensitivity of quantum technologies from inertial sensing and clocks to quantum information processors and tests of fundamental physics.
References in corpus (22)
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- NMR Techniques for Quantum Control and Computation
- Sensitive Absolute Gravity Gradiometry Using Atom Interferometry
- Implementation of Cavity Squeezing of a Collective Atomic Spin
- Extending Quantum Coherence in Diamond
- States of an Ensemble of Two-Level Atoms with Reduced Quantum Uncertainty
- Tackling Systematic Errors in Quantum Logic Gates with Composite Rotations
- NMR-like control of a quantum bit superconducting circuit
- Error-resistant Single Qubit Gates with Trapped Ions
- A generalized Ramsey excitation scheme with suppressed light shift
- Quantum Enhanced Magnetometer with Low-Frequency Squeezing
- Composite-pulse magnetometry with a solid-state quantum sensor
- Use of composite rotations to correct systematic errors in NMR quantum computation
- Quantum teleportation with atoms: quantum process tomography
- Designing short robust NOT gates for quantum computation
- Accurate Microwave Control and Real-Time Diagnostics of Neutral Atom Qubits
- Field-sensitive addressing and control of field-insensitive neutral-atom qubits
- A Quantum Scattering Interferometer
- Hänsch--Couillaud locking of Mach--Zehnder interferometer for carrier removal from a phase-modulated optical spectrum
- 'Algorithmic cooling' in a momentum state quantum computer
- Stabilized fiber-optic Mach-Zehnder interferometer for carrier-frequency rejection
- Actively stabilized wavelength-insensitive carrier elimination from an electro-optically modulated laser beam
Cited by in corpus (36)
- Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100)
- Progress and perspectives on composite laser-pulses spectroscopy for high-accuracy optical clocks
- Atom Interferometry with Floquet Atom Optics
- Geometric control of collective spontaneous emission
- Regimes of atomic diffraction: Raman versus Bragg diffraction in retroreflective geometries
- Optimal control of mirror pulses for atom interferometry
- Robust single-qubit gates by composite pulses in three-level systems
- Ultrahigh-fidelity composite rotational quantum gates
- High-fidelity quantum control by polychromatic pulse trains
- Improving the phase response of an atom interferometer by means of temporal pulse shaping
- Precise pulse shaping for quantum control of strong optical transitions
- Narrowband and passband composite pulses for variable rotations
- Composite pulses with errant phases
- Universal Composite Pulses for Efficient Population Inversion with an Arbitrary Excitation Profile
- Bi-selective pulses for large-area atom interferometry
- Robust Atom Optics for Bragg Atom Interferometry
- Robust Optimized Pulse Schemes for Atomic Fountain Interferometry
- High-fidelity composite quantum gates for Raman qubits
- Interferometric laser cooling of atomic rubidium
- Robust Quantum Control via Multipath Interference for Thousandfold Phase Amplification in a Resonant Atom Interferometer
- Control of spatial correlations between Rydberg excitations using rotary echo
- Atomic spin-wave control and spin-dependent kicks with shaped subnanosecond pulses
- Enhancing strontium clock atom interferometry using quantum optimal control
- Dynamical low-noise microwave source for cold-atom experiments
- Velocimetry of cold atoms by matterwave interferometry
- Matterwave interferometric velocimetry of cold Rb atoms
- Spinor matterwave control with nanosecond spin-dependent kicks
- Drive-noise tolerant optical switching inspired by composite pulses
- Ultrahigh-fidelity composite quantum phase gates
- Three-state coherent control using narrowband and passband sequences
- Integration of a high-fidelity model of quantum sensors with a map-matching filter for quantum-enhanced navigation
- Coherent coupling of momentum states: selectivity and phase control
- Collinear Three-Photon Excitation of a Strongly Forbidden Optical Clock Transition
- Ultrabroadband, ultranarrowband and ultrapassband composite polarisation half-wave plates, ultrabroadband composite polarisation pi-rotators and on the quantum-classical analogy
- Coherence Protection of Electron Spin in Earth-field Range by All-optical Dynamic Decoupling
- Cyclicity of interaction frame transformations