Browse Physics

A sheet of tiny structures, such as nanoscale graphene disks, can absorb all incident light of a specific wavelength coming from any direction, theory suggests.

Quantum interference of pairs of photons emitted by nitrogen-vacancy centers in diamond paves the way for entanglement of distant qubits.

Advances in a magneto-optical technique will allow researchers to better understand how to control spins in a metal with short optical pulses.

New theoretical tools could take spintronic lasers to the next phase of their evolution.

By tracking the tiny displacements of a nanoparticle trapped in an optical tweezer, scientists are able to detect the faintest of acoustic waves.

Infrared spectroscopy can detect trace gases and potentially provide an alternative carbon dating technique.

Theoretical models edge closer to explaining how photoionization is affected by many-body interactions.

Adding a third molecule to an organic semiconductor laser can alter the balance of power among its energy levels and allow continuous rather than pulsed operation.

Large-scale free-electron laser facilities with limited beam time can be simulated by low-cost, tabletop, mode-locked laser systems

Absorption spectroscopy limited only by quantum noise has been demonstrated over a broad frequency range using laser frequency combs.

According to theoretical work, the tricks for controlling atoms with lasers should extend naturally into probing the nucleus.

Coupling a silicon nitride membrane resonator with a gas of ultracold atoms offers a novel approach to controlling mechanical systems at the quantum level.

Theorists have devised two new ways to drag objects towards a light source.

Spontaneous emission from stimulated quantum dots can be suppressed inside a crystal with a 3D photonic band gap.

A laser gyroscope measures extremely low-frequency wobbles in the Earth’s rotation.

A subwavelength double groove on a metal acts as a broadband device for funneling light.

In a superconductor-semiconductor hybrid system, circularly polarized light can generate an electric current without the system leaving thermal equilibrium.

Theory shows that three-level atoms can overcome intrinsic problems with two-level systems in controlling the flow of photons.

Modified photonic structures from the wings of weevil beetles set a new record for optical emission control.

A Fabry-Pérot cavity exhibits the same behavior when an atom replaces a mirror.