Blackbody Radiation Noise Broadening of Quantum Systems

Abstract

Precision measurements of quantum systems often seek to probe or must account for the interaction with blackbody radiation. Over the past several decades, much attention has been given to AC Stark shifts and stimulated state transfer. For a blackbody in thermodynamic equilibrium, these two effects are determined by the expectation value of photon number in each mode of the Planck spectrum. Here, we explore how the photon number variance of an equilibrium blackbody generally leads to a parametric broadening of the energy levels of quantum systems that is inversely proportional to the square-root of the blackbody volume. We consider the the effect in two cases which are potentially highly sensitive to this broadening: Rydberg atoms and atomic clocks. We find that even in blackbody volumes as small as 1\,cm${}^3$, this effect is unlikely to contribute meaningfully to transition linewidths.

References in corpus (23)

• Search for New Physics with Atoms and Molecules
• Systematic evaluation of an atomic clock at 2e-18 total uncertainty
• Atomic clock performance beyond the geodetic limit
• Theory and applications of atomic and ionic polarizabilities
• Improved Measurement of the Hydrogen 1S - 2S Transition Frequency
• A Single-Ion Nuclear Clock for Metrology at the 19th Decimal Place
• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Energy of the ${}^{229}$Th nuclear clock transition
• Microfabricated high-finesse optical cavity with open access and small volume
• An atomic clock with $1\times 10^{-18}$ room-temperature blackbody Stark uncertainty
• Magnetic trapping and coherent control of laser-cooled molecules
• Inner-shell clock transition in atomic thulium with small BBR shift
• Hyperpolarizability and operational magic wavelength in an optical lattice clock
• ARC 3.0: An expanded Python toolbox for atomic physics calculations
• Optical pumping of trapped neutral molecules by blackbody radiation
• Precision frequency-comb terahertz spectroscopy on pure quantum states of a single molecular ion
• Lattice-induced photon scattering in an optical lattice clock
• Quantum Blackbody Thermometry
• Precision measurements with polar molecules: the role of the black body radiation
• Long-lived circular Rydberg states of laser-cooled Rubidium atoms in a cryostat
• Atomic Properties of Lu${}^{+}$
• Black Body Radiation Shift of the 133Cs Hyperfine Transition Frequency
• Clock-related properties of Lu+