Quantum Sensing Using Atomic Clocks for Nuclear and Particle Physics

Abstract

Technologies for manipulating single atoms have advanced drastically in the past decades. Due to their excellent controllability of internal states, atoms serve as one of the ideal platforms as quantum systems. One major research direction in atomic systems is the precise determination of physical quantities using atoms, which is included in the field of precision measurements. One of such precisely measured physical quantities is energy differences between two energy levels in atoms, which is symbolized by the remarkable fractional uncertainty of $10^{-18}$ or lower achieved in the state-of-the-art atomic clocks. Two-level systems in atoms are sensitive to various external fields and can, therefore, function as quantum sensors. The effect of these fields manifests as energy shifts in the two-level system. Traditionally, such shifts are induced by electric or magnetic fields, as recognized even before the advent of precision spectroscopy with lasers. With high-precision measurements, tiny energy shifts caused by hypothetical fields weakly coupled to ordinary matter or by small effects mediated by massive particles can be potentially detectable, which are conventionally dealt with in the field of nuclear and particle physics. In most cases, the atomic systems as quantum sensors have not been sensitive enough to detect such effects. Instead, experiments searching for these interactions have placed constraints on coupling constants, except in a few cases where effects are predicted by the Standard Model of particle physics. Nonetheless, measurements and searches for these effects in atomic systems have led to the emergence of a new field of physics.

30 pages, 9 figures

References in corpus (74)

• Test of the Equivalence Principle Using a Rotating Torsion Balance
• Systematic evaluation of an atomic clock at 2e-18 total uncertainty
• An ${}^{27}$Al${}^{+}$ quantum-logic clock with systematic uncertainty below $10^{-18}$
• Sr lattice clock at 1x10^{-16} fractional uncertainty by remote optical evaluation with a Ca clock
• Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
• Frequency ratio of two optical clock transitions in ${}^{171}$Yb${}^{+}$ and constraints on the time-variation of fundamental constants
• Searching for dilaton dark matter with atomic clocks
• Ultra-stable optical clock with two cold-atom ensembles
• Improved limit on a temporal variation of $m_p/m_e$ from comparisons of Yb${}^{+}$ and Cs atomic clocks
• Search for ultralight scalar dark matter with atomic spectroscopy
• Enhanced effect of temporal variation of the fine structure constant in diatomic molecules
• Real-time geopotentiometry with synchronously linked optical lattice clocks
• A transportable optical lattice clock with $7\times 10^{-17}$ uncertainty
• Observation of the 1S0 - 3P0 clock transition in 27Al+
• Stability of the proton-to-electron mass ratio
• Enhanced laboratory sensitivity to variation of the fine-structure constant using highly-charged ions
• ${}^{87}$Sr lattice clock with inaccuracy below 10${}^{-15}$
• Frequency ratio of the ${}^{229\mathrm{m}}$Th nuclear isomeric transition and the ${}^{87}$Sr atomic clock
• Neutron scattering and extra short range interactions
• Search for axion-like dark matter through nuclear spin precession in electric and magnetic fields
• The status of varying constants: a review of the physics, searches and implications
• 2000-times repeated imaging of strontium atoms in clock-magic tweezer arrays
• Limits on a CP-violating scalar axion-nucleon interaction
• An atomic clock with $1\times 10^{-18}$ room-temperature blackbody Stark uncertainty
• Measurement of the ${}^{229}$Th isomer energy with a magnetic micro-calorimeter
• An ultrastable silicon cavity in a continuously operating closed-cycle cryostat at 4 K
• Hole transitions in multiply-charged ions for precision laser spectroscopy and searching for alpha-variation
• Improved frequency measurement of a one-dimensional optical lattice clock with a spin-polarized fermionic ${}^{87}$Sr isotope
• Near-Unitary Spin Squeezing in ${}^{171}$Yb
• Highly-charged ions for atomic clocks, quantum information, and search for $\alpha$-variation
• Ultracold molecules: new probes on the variation of fundamental constants
• Operational Magic Intensity for Sr Optical Lattice Clocks
• A generalized Ramsey excitation scheme with suppressed light shift
• Hyperpolarizability and operational magic wavelength in an optical lattice clock
• Limit on the Temporal Variation of the Fine-Structure Constant Using Atomic Dysprosium
• Relativistic corrections to transition frequencies of Ag I, Dy I, Ho I, Yb II, Yb III, Au I and Hg II and search for variation of the fine structure constant
• Frequency evaluation of the doubly forbidden ${}^1{S}_0{\to }^3{P}_0$ transition in bosonic ${}^{174}$Yb
• Highly charged ions with E1, M1, and E2 transitions within laser range
• Determination of the 5d6s 3D1 state lifetime and blackbody radiation clock shift in Yb
• Magnetic-dipole transitions in highly-charged ions as a basis of ultra-precise optical clocks
• Improved isotope-shift-based bounds on bosons beyond the Standard Model through measurements of the ${}^2$D${}_{3/2}{-}^2$D${}_{5/2}$ interval in Ca${}^{+}$
• Optical transitions in highly-charged californium ions with high sensitivity to variation of the fine-structure constant
• Energy of the ${}^{229}$Th Nuclear Clock Isomer Determined by Absolute $\gamma$-ray Energy Difference
• Study of highly-charged Ag-like and In-like ions for the development of atomic clocks and search for $\alpha$-variation
• Detection of the $5p-4f$ orbital crossing and its optical clock transition in Pr${}^{9+}$
• High-Stability Single-Ion Clock with $5.5\times 10^{-19}$ Systematic Uncertainty
• Fundamental physics with ESPRESSO: Precise limit on variations in the fine-structure constant towards the bright quasar HE 0515$-$4414
• ${}^{229}{\mathrm{ThF}}_4$ thin films for solid-state nuclear clocks
• Optical clock sensitive to variation of the fine structure constant based on the Ho${}^{14+}$ ion
• Controlling ${}^{229}$Th isomeric state population in a VUV transparent crystal
• Probing new intra-atomic force with isotope shifts
• Spin-dependent exotic interactions
• Measurements of ${}^{27}$Al${}^{+}$ and ${}^{25}$Mg${}^{+}$ magnetic constants for improved ion clock accuracy
• Radium Ion Optical Clock
• Electric Quadrupole Moments of Metastable States of Ca+, Sr+, and Ba+
• Observation of an Inner-Shell Orbital Clock Transition in Neutral Ytterbium Atoms
• Searching for dark matter with the Th-229 nuclear lineshape from laser spectroscopy
• ${}^{229}$Th Nuclear Spectroscopy in an Opaque Material: Laser-Based Conversion Electron Mössbauer Spectroscopy of ${}^{229}$ThO${}_2$
• Clock precision beyond the Standard Quantum Limit at $10^{-18}$ level
• Measurement of the Hyperfine Quenching Rate of the Clock Transition in ${}^{171}$Yb
• Cryogenic Optical Lattice Clock with $1.7\times 10^{-20}$ Blackbody Radiation Stark Uncertainty
• Spectroscopic determination of magnetic-field-dependent interactions in an ultracold Yb(3P2)-Li mixture
• ${}^{88}$Sr${}^{+}$ optical clock with $7.9\times 10^{-19}$ systematic uncertainty and measurement of its absolute frequency with $9.8\times 10^{-17}$ uncertainty
• Clock-line-mediated Sisyphus Cooling
• A laser with instability reaching $4\times 10^{-17}$ based on a 10-cm-long silicon cavity at sub-5-K temperatures
• Pr10+ as a candidate for a high-accuracy optical clock for tests of fundamental physics
• Testing strong-field QED to second-order in the highly correlated atomic system berylliumlike Pb78+ by electron-ion recombination spectroscopy
• Quantum Electrodynamics in Strong Electromagnetic Fields: Substate Resolved K$\alpha$ Transition Energies in Helium-like Uranium
• Scalable quantum logic spectroscopy
• Ratchet Loading and Multi-Ensemble Operation in an Optical Lattice Clock
• JWST observations constrain the time evolution of fine structure constants and dark energy - electromagnetic coupling
• Synchronous Comparison of Two Thulium Optical Clocks
• Ytterbium atom interferometry for dark matter searches
• Enhancing optical lattice clock coherence times with erasure conversion