Search results for quanta

Quantum Physics May 6, 2022

A step forward in modern quantum technology: Frequency conversion of single photons at arbitrary wavelengths

Quanta of light—photons—form the basis of quantum key distribution in modern cryptographic networks. Before the huge potential of quantum technology is fully realized, however, several challenges remain. A solution to one ...

Optics & Photonics Apr 11, 2022

Study highlights the possibility of building wave-shape-tolerant qubit gates

Quantum computers, machines that leverage quantum states to perform computations and store data, could soon revolutionize the computing industry, achieving significantly greater speeds and performance than existing computers. ...

Quantum Physics Feb 10, 2022

Measuring Einstein's photoelectric effect: The time it takes for an electron to be released

When light hits a material, electrons can be released from this material—the photoelectric effect. Although this effect played a major role in the development of the quantum theory, it still holds a number of secrets: To ...

Optics & Photonics Feb 9, 2022

Detecting low-energy microwave photons emitted by superconducting qubits

Professor Jukka Pekola and Doctoral Candidate Bayan Karimi from Aalto University propose a new approach to measure the energy of single microwave photons. These low energy quanta are emitted by artificial quantum systems ...

Quantum Physics Feb 2, 2022

Using the principle of coherent feedback to cool a quantum system

We've all experienced the principle of feedback—for example, when we use a thermostat in conjunction with a heating system to regulate indoor temperature. The thermostat measures the current temperature, compares it with ...

Optics & Photonics Jan 31, 2022

New telecom receiver system checks reliability of message components in real time

Scientists at the National Institute of Standards and Technology (NIST) have invented and demonstrated a novel scheme for substantially improving the detection accuracy of information transmitted in pulses of light through ...

Condensed Matter Jan 26, 2022

Diamond quantum sensor detects 'magnetic flow' excited by heat

In recent times, sustainable development has been the overarching guiding principle of research concerning environmental issues, energy crises, and information and communication technology. In this regard, spintronic devices ...

Quantum Physics Dec 13, 2021

Quantum algorithms bring ions to a standstill

Laser beams can do more than just heat things up; they can cool them down too. That is nothing new for physicists who have devoted themselves to precision spectroscopy and the development of optical atomic clocks. But what ...

Optics & Photonics Dec 9, 2021

Towards quantum states of sound

Researchers make key steps towards generating quantum states of sound inside a microscopic device using laser light and single-photon measurements.

General Physics Nov 30, 2021

Researchers generate, for the first time, a vortex beam of atoms and molecules

Vortices may conjure a mental image of whirlpools and tornadoes—spinning bodies of water and air—but they can also exist on much smaller scales. In a new study published in Science, researchers from the Weizmann Institute ...

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