High-frequency gravitational waves (HFGWs) are predicted in various exotic scenarios
involving both cosmological and astrophysical sources. These elusive signals have recently …

Dark photons have emerged as promising candidates for dark matter, and their search is a
top priority in particle physics, astrophysics, and cosmology. We report the first use of a …

By strongly driving a transmon-resonator system, the transmon qubit may eventually escape
from its cosine-shaped potential. This process is called transmon ionization (TI) and known …

We present the first use of a tunable superconducting radio frequency cavity to perform a
scan search for dark photon dark matter with novel data analysis strategies. We …

Dark photons, aside from constituting non-relativistic dark matter, can also be generated
relativistically through the decay or annihilation of other dark matter candidates, contributing …

Parametric down-conversion is a widely exploited technique in optics to produce entangled
states of photons for quantum information processing and quantum sensing. In the …

A quantum transducer converts an input signal to an output probe at a distant frequency
band while maintaining the quantum information with high fidelity, which is crucial for …

We study in detail the postselection problem in a specific model: bosons hopping on a lattice
subjected to continuous local measurements of quadrature observables. We solve the …

We propose a novel dark matter detection scheme by leveraging quantum coherence across
a network of multiple quantum sensors. This method effectively eliminates incoherent …

The nature of dark matter is a fundamental puzzle in modern physics. A major approach of
searching for dark matter relies on detecting feeble noise in microwave cavities. However …