Browse Physics

When placed inside a 3D electromagnetic cavity, a superconducting qubit can be made potentially more useful because of its large size and long coherence time.

Experiments with classical light sources show that tests of Bell’s inequalities can be manipulated to yield counterfeit quantum answers.

The anisotropic hyperfine interaction allows entanglement of two nuclear spins using microwave pulses.

The coupling between nitrogen vacancy centers can be dramatically improved through the use of electromagnetic driving fields.

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

Combining operations with one and two spin qubits may lead to superior quantum computers.

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

Techniques for using a quantum computer to simulate another quantum system will work even when the modeled system is not isolated from its environment.

A theoretical proposal shows how pure quantum states can be turned into long-lasting states that are protected from decoherence.

By applying environmental noise to a photon detector, researchers have identified the boundary where the device switches from a quantum device to a classical one.

Researchers demonstrate a robust, high-fidelity, broadband quantum memory that could be used to realize a long-distance quantum repeater for secure communication.

Rapid frequency variations in the photons generated by a quantum dot pose difficulties for practical applications of new quantum dot materials.

Researchers report entanglement of many cavity modes using an optical frequency comb.

Can quantum theory be derived from more fundamental principles?

Observations of single photons traveling through cold atomic gases confirm that information can only travel as fast as the speed of light.

A link in a quantum network is built from a hybrid atomic system, connected by fiber optics.

According to calculations, a quantum version of energy transfer in plants would not necessarily offer any speedup compared to its classical counterpart.

In transistor circuits, preventing logical errors with physical fault tolerance is more efficient than correcting errors with a fault-tolerant architecture.

Quick detection of photogenerated electrons in a quantum dot may lead to a better method to transfer quantum information between optical and electrical media.

Demonstration of one-shot measurement of a single spin on a silicon quantum dot brings the prospect of quantum information processing one step closer.