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Tag Archives: Quantum Physics
Quantum Thermal Transistor Amplifies Heat Currents
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
Parametric Amplification for Silicon Quantum Devices
A new design based on the quantum capacitance of a silicon quantum dot could enable scalable, high-fidelity qubit readout. Continue reading
Heat Leaks from Trapped-Ion Qubits
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…
Extracting the Spin and Valley Information of Electrons
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…
Quantum Measurement Strikes a Balance
An experiment demonstrates the trade-off between measurement and total information content—comprising gain, disturbance, and reversibility—in a quantum system. Continue reading
A Physical Match for the Riemann Zeta Function
Mathematical properties of a famous number-theory conjecture correspond to the physical scattering properties of a quantum field theory. Continue reading
A Universal Model of Spin Relaxation
A first-principles theory predicts nonequilibrium spin dynamics, including various quantum scatterings for general solid materials. Continue reading
Posted in APS Physics
Tagged APS Physics, Condensed Matter Physics, Quantum Physics, Spintronics
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Research Team Unlocks Path to a Quantum Future
Developing new pathways to create and protect quantum coherence will enable exquisitely sensitive measurement and information processing devices that function at ambient or even extreme conditions. Continue reading
A Hallmark of Topological Insulators is Measured in Atoms
Using ultracold atoms, researchers measure the number of chiral edge states in a system with time-reversal symmetry. Continue reading
Quantum Metasurfaces Entangle Photons on Demand
When it’s modulated by laser beams, a surface made of polarizable meta-atoms can entangle a photon’s properties in multiple, controllable ways. Continue reading