Atom interferometry with the Sr optical clock transition

Abstract

We report on the realization of a matter-wave interferometer based on single-photon interaction on the ultra-narrow optical clock transition of strontium atoms. We experimentally demonstrated its operation as a gravimeter and as a gravity gradiometer. No reduction of interferometric contrast was observed up to an interferometer time $2T=10$ ms, limited by geometric constraints of the apparatus. In the gradiometric configuration, the sensitivity approaches the shot noise limit. Single-photon interferometers represent a new class of high-precision sensors that could be used for the detection of gravitational waves in so far unexplored frequency ranges and to enlighten the boundary between Quantum Mechanics and General Relativity.

5 pages, 4 figures

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• High-accuracy inertial measurements with cold-atom sensors
• Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100)
• Testing gravity with cold atom interferometry: Results and prospects
• Large Momentum Transfer Clock Atom Interferometry on the 689 nm Intercombination Line of Strontium
• ELGAR -- a European Laboratory for Gravitation and Atom-interferometric Research
• Long-lived Bell states in an array of optical clock qubits
• Precision Gravity Tests and the Einstein Equivalence Principle
• Mid-band gravitational wave detection with precision atomic sensors
• Gravitational redshift in quantum-clock interferometry
• Three-path atom interferometry with large momentum separation
• Interference of Clocks: A Quantum Twin Paradox
• Atomic source selection in space-borne gravitational wave detection
• Sr atom interferometry with the optical clock transition as a gravimeter and a gravity gradiometer
• Continuous guided strontium beam with high phase-space density
• Measuring gravitational time dilation with delocalized quantum superpositions
• A Sideband-Enhanced Cold Atomic Source For Optical Clocks
• Cavity-QED determination of the natural linewidth of the ${}^{87}$Sr millihertz clock transition with 30$\mu$Hz resolution
• Watt-level blue light for precision spectroscopy, laser cooling and trapping of strontium and cadmium atoms
• Atom-interferometric test of the universality of gravitational redshift and free fall
• Fast and dense magneto-optical traps for Strontium
• Passive Optical Phase Noise Cancellation
• Bragg gravity-gradiometer using the ${}^1$S${}_0$-${}^3$P${}_1$ intercombination transition of ${}^{88}$Sr
• A mid-infrared magneto-optical trap of metastable strontium for an optical lattice clock
• Universality-of-clock-rates test using atom interferometry with $T^3$ scaling
• A robust, high-flux source of laser-cooled ytterbium atoms
• Light propagation and atom interferometry in gravity and dilaton fields
• All-passive multiple-place optical phase noise cancellation
• Multi-node optical frequency dissemination with post automatic phase correction
• Atom-Number Enhancement by Shielding Atoms from Losses in Strontium Magneto-Optical Traps
• Atomic diffraction from single-photon transitions in gravity and Standard-Model extensions
• Robust Quantum Control via Multipath Interference for Thousandfold Phase Amplification in a Resonant Atom Interferometer
• Technologies for the ELGAR large scale atom interferometer array
• Optimal baseline exploitation in vertical dark-matter detectors based on atom interferometry
• Passive Optical Phase Stabilization on a Ring Fiber Network
• Enhancing strontium clock atom interferometry using quantum optimal control
• Interferometry in an Atomic Fountain with Ytterbium Bose-Einstein Condensates
• Clock Transitions Versus Bragg Diffraction in Atom-interferometric Dark-matter Detection
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• Bi-color atomic beam slower and magnetic field compensation for ultracold gases
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• Measuring the gravitational acceleration with precision matter-wave velocimetry
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• Enhanced phase noise reduction in localized two-way optical frequency comparison
• Dichroic mirror pulses for optimized higher-order atomic Bragg diffraction
• Observation of photon recoil effects in single-beam absorption spectroscopy with an ultracold strontium gas
• Absolute frequency measurement of the 5s5p ${}^1{P}_1$ - 5s5d ${}^1{D}_2$ transition in strontium
• Geometric phase amplification in a clock interferometer for enhanced metrology
• Witnessing mass-energy equivalence with trapped atom interferometers
• Non-linear Relaxation of Interacting Bosons Coherently Driven on a Narrow Optical Transition
• Spatial and Pulse Efficiency Constraints in Atom Interferometric Gravitational Wave Detectors
• Unified laboratory-frame analysis of atomic gravitational-wave sensors
• A prototype differential atom interferometer for fundamental physics
• Effect of environment on the interferometry of clocks
• Quantum sensors with matter waves for GW observation
• Fundamental Limitations of Rayleigh Backscattering Noise on Fiber-Based Multiple-Access Optical Frequency Transfer
• Single-atom imaging of ${}^{173}$Yb in optical tweezers loaded by a five-beam magneto-optical trap
• Gallium-nitride-based interference-filter-stabilized external cavity diode laser with a surface-activated-bonded output coupler
• Light-pulse atom interferometry with entangled atom-optical elements
• Collinear Three-Photon Excitation of a Strongly Forbidden Optical Clock Transition
• Improving the Q factor of an optical atomic clock using quantum non-demolition measurement
• Two-color magneto-optical trapping of ytterbium atoms
• Robust optical frequency transfer in a noisy urban fiber network
• Phase modulation detection of a strontium atom interferometer gyroscope
• Hyper Ramsey-Bordé matter-wave interferometry for robust quantum sensors