News tagged with quantum measurement

Quantum copies do new tricks

One of the strange features of quantum information is that, unlike almost every other type of information, it cannot be perfectly copied. For example, it is impossible to take a single photon and make a number of photons ...

Mar 22, 2012
4.2 / 5 (13) 22 | with audio podcast

The first controllable atom SQUID

(Phys.org)—Scientists have created the first controllable atomic circuit that functions analogously to a superconducting quantum interference device (SQUID) and allows operators to select a particular quantum ...

Nov 07, 2012
5 / 5 (8) 0 | with audio podcast

Slowing down microwaves in a chip

EPFL scientists have succeeded in capturing a microwave pulse within a chip for several milliseconds before releasing it with little loss. This extraordinary delay normally requires hundreds of miles of electrical ...

Jan 31, 2013
4.6 / 5 (8) 1 | with audio podcast

Cold atoms for quantum technology

Researchers from the National Physical Laboratory, University of Strathclyde, Imperial College London and University of Glasgow have developed a portable way to produce ultracold atoms for quantum technology ...

May 08, 2013
4.9 / 5 (10) 0 | with audio podcast

Disentangling information from photons

Theoretical physicist Filippo Miatto and colleagues from the University of Strathclyde, Glasgow, UK, have found a new method of reliably assessing the information contained in photon pairs used for applications in cryptography ...

Jul 12, 2012
4.8 / 5 (5) 3 | with audio podcast

Physicists resolve a paradox of quantum theory

University of Toronto quantum physicists Jeff Lundeen and Aephraim Steinberg have shown that Hardy's paradox, a proposal that has confounded physicists for over a decade, can be confirmed and ultimately resolved, a task which ...

Jan 14, 2009
4.6 / 5 (28) 4