Tag Archives: parity bit

Physics in the News

Tuesday, July 15, 2014

New qubit design provides parity bit for Schrödinger cat states

The device combines a superconducting microwave resonator to trap the photons and a circuit quantum electrodynamic qubit that's linked to the resonator.(Credit: Schoelkopf Lab, Yale)
The device combines a superconducting microwave resonator to trap the photons and a circuit quantum electrodynamic qubit that’s linked to the resonator.(Credit: Schoelkopf Lab, Yale)
via arstechnica

The world’s first photonic router

This image depicts from left to right Serge Rosenblum, Yulia Lovsky, Orel Bechler and Itay Shomroni. At the center of the photonic router is a single atom that routes photons in different directions. (Credit: Weizmann Institute of Science)
This image depicts from left to right Serge Rosenblum, Yulia Lovsky, Orel Bechler and Itay Shomroni. At the center of the photonic router is a single atom that routes photons in different directions. (Credit: Weizmann Institute of Science)
via phys.org

Two anomalies worth noticing

The results obtained by the CMS Collaboration showing that six different channels all give a non-zero value for the decay rate of Higgs boson into pairs of tau and muon. (Credit: Pauline Gagnon)
The results obtained by the CMS Collaboration showing that six different channels all give a non-zero value for the decay rate of Higgs boson into pairs of tau and muon.
(Credit: Pauline Gagnon)
via quantumdiaries

Ukraine to turn Chernobyl into ‘biosphere radiologic reserve’

The damaged 4th unit of the Chernobyl Nuclear Power Plant and a memorial sign “Heroes, Professionals – those who protected the world from nuclear disaster” in the Chernobyl Exclusion Zone (Credit: RIA Novosti)
via rt.com

Smallest Swiss cross—made of 20 single atoms

20 bromine atoms positioned on a sodium chloride surface using the tip of an atomic force microscope at room temperature, creating a Swiss cross with the size of 5.6nm. The structure is stable at room temperature and was achieved by exchanging chlorine with bromine atoms. (Credit: Department of Physics, University of Basel)
20 bromine atoms positioned on a sodium chloride surface using the tip of an atomic force microscope at room temperature, creating a Swiss cross with the size of 5.6nm. The structure is stable at room temperature and was achieved by exchanging chlorine with bromine atoms. (Credit: Department of Physics, University of Basel)
via phys.org

Consider the ‘Anticrystal’

Materials can be described as being on a spectrum from a perfectly ordered crystal to a perfectly disordered anticrystal. (Credit: Liu, Goodrich, Nagel)
Materials can be described as being on a spectrum from a perfectly ordered crystal to a perfectly disordered anticrystal. (Credit: Liu, Goodrich, Nagel)
via spacemart

A Critical Test of Quantum Criticality

a) An example of the classical phase transition in a ferromagnet. Thermal fluctuations causing the random reorientation of the constituent spins grow with temperature. They compete with the tendency of the local magnetic fields to align the spins. As a result, the net magnetization in the ordered state continuously decreases with temperature (orange line) and drops to zero at a critical temperature Tc, surrounded by a narrow critical region (dashed rectangle). (b) A generic example of the quantum phase transition. Quantum fluctuations controlled by the nonthermal parameter g lead to a similar phase transition at a critical value gc, the so called quantum critical point, already at zero temperature, T=0. Their interplay with thermal fluctuations opens up a progressively broader, V-shaped quantum critical region extending much above the zero temperature (dashed lines).
a) An example of the classical phase transition in a ferromagnet. Thermal fluctuations causing the random reorientation of the constituent spins grow with temperature. They compete with the tendency of the local magnetic fields to align the spins. As a result, the net magnetization in the ordered state continuously decreases with temperature (orange line) and drops to zero at a critical temperature Tc, surrounded by a narrow critical region (dashed rectangle). (b) A generic example of the quantum phase transition. Quantum fluctuations controlled by the nonthermal parameter g lead to a similar phase transition at a critical value gc, the so called quantum critical point, already at zero temperature, T=0. Their interplay with thermal fluctuations opens up a progressively broader, V-shaped quantum critical region extending much above the zero temperature (dashed lines).
via physics.aps

Online Isaac Newton manuscripts workshop

India's Zetatrek citizen science initiative is online workshop starting on 19th July, where science and math hobbyists from all over the world are invited to study the original manuscripts of Sir Isaac Newton.
India’s Zetatrek citizen science initiative is online workshop starting on 19th July, where science and math hobbyists from all over the world are invited to study the original manuscripts of Sir Isaac Newton.
via boingboing