Research News

Floquet engineering, in which the properties of the system are qualitatively modified by strong periodic driving, provides a route to realizing new kinds of quantum systems. However, a Floquet-engineered Hamiltonian is always accompanied by unwanted heating.

In a new paper, scientists seeking better methods for controlling the quantum interactions between light and matter demonstrated a novel way to use light to give electrons a spinning kick. They reported the results of their experiment, which shows that a light beam can reliably transfer orbital angular momentum to itinerant electrons in graphene, on Nov. 26, 2024, in the journal Nature Photonics.

Decades of quantum research are now being transformed into practical technologies, including the superconducting circuits that are being used in physics research and built into small quantum computers by comp

We have written a review article describing advances in chip-integrated laser technologies in the visible and short near-infrared wavelength regimes.

Quantum computers are potentially revolutionary devices and the basis of a growing industry. However, their technology isn’t standardized yet, and researchers are still studying the physics behind the diverse ways to build these quantum devices. Even the most basic building blocks of a quantum computer—qubits—are still an active research topic.

In a new paper, we demonstrate interactions between vapor-phase Rb atoms and an integrated photonic microresonator down to the few-atom, few-photon level.

In radio frequency technologies, the Chu Limit presents a significant challenge for small antennas, particularly at low frequencies where their performance is constrained.

Atomic quantum sensors (e.g. clocks, magnetometers, electrometers, inertial sensors, etc.) are being used to solve real-world problems including global positioning, imaging of biological systems, and geodesy, with new applications continually emerging. The breadth of the atomic sensor design space is daunting, since one may utilize any combination of atomic states, lasers, rf fields, time-dependence, atomic nonlinearities, lasercooling and trapping, and Rydberg states.

Recent work uses a quantum sensor to simultaneously receive five radio-frequency (RF) signals covering 120 gigahertz (GHz) of the electromagnetic spectrum. This demonstration expands the boundaries of wireless communications, highlighting a unique capability difficult to achieve with other technologies.

Quantum particles have unique properties that make them powerful tools, but those very same properties can be the bane of researchers. Each quantum particle can inhabit a combination of multiple possibilities, called a quantum superposition, and together they can form intricate webs of connection through quantum entanglement.