Tag Archives: Quantum Physics

A Dense, Cold Gas of EuropiumAtoms

Posted on November 23, 2022 by rberkowitz

A Bose-Einstein condensate of europium atoms provides a new experimental platform for studying quantum spin interactions. Read more at APS Physics…

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Expanding Universe in the Lab

Posted on November 16, 2022 by rberkowitz

Researchers control the speed of sound in an ultracold gas, mimicking features of a curved spacetime and reproducing quantum field behavior predicted in early Universe models. Continue reading →

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Boron Nitride with a Twist Could Lead to New Way to Make Qubits

Posted on October 6, 2022 by rberkowitz

Easy control over bright emissions from the crystalline material offer a route toward scalable quantum computing and sensing. Continue reading →

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An Exotic Fractional Quantum Hall State

Posted on October 6, 2022 by rberkowitz

The even-denominator state appears in a 2D quasiparticle system, but researchers still can’t explain its origin. Continue reading →

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Quantum Thermal Transistor Amplifies Heat Currents

Posted on August 9, 2022 by rberkowitz

A three-qubit transistor design offers a way to manipulate the system’s heat flow by hitting one of the qubits with a laser. Continue reading →

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Parametric Amplification for Silicon Quantum Devices

Posted on May 11, 2022 by rberkowitz

A new design based on the quantum capacitance of a silicon quantum dot could enable scalable, high-fidelity qubit readout. Continue reading →

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Heat Leaks from Trapped-Ion Qubits

Posted on March 18, 2022 by rberkowitz

By determining whether two qubits are coupled to a third “hidden” one, researchers can detect whether energy is irreversibly lost from a quantum system. Read more in APS Physics…

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Extracting the Spin and Valley Information of Electrons

Posted on February 9, 2022 by rberkowitz

An electron’s spin and valley information can be determined by monitoring how easily that electron passes through a qubit.  Read more in APS Physics…

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Quantum Measurement Strikes a Balance

Posted on February 3, 2022 by rberkowitz

An experiment demonstrates the trade-off between measurement and total information content—comprising gain, disturbance, and reversibility—in a quantum system. Continue reading →

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A Physical Match for the Riemann Zeta Function

Posted on December 8, 2021 by rberkowitz

Mathematical properties of a famous number-theory conjecture correspond to the physical scattering properties of a quantum field theory. Continue reading →

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