News tagged with quantum state
Related topics: quantum information , quantum computing , quantum mechanics , physical review letters , quantum physics
Using superconducting probes to get a picture of what it's like inside CNTs
(PhysOrg.com) -- "Carbon nanotubes are exciting for fundamental physics, and for potential technological applications," Nadya Mason tells PhysOrg.com. "However, we are generally limited in the way that we can study them. ...
Nov 20, 2009 |
4.3 / 5 (10) |
0
Creating a six-qubit cluster state
(PhysOrg.com) -- Many scientists believe that quantum entanglement is required in order for effective quantum computing. Entanglement takes place when there is a connection that exists between two objects - even when they ...
Nov 02, 2009 |
4.6 / 5 (11) |
2
Study Shows Time Traveling May Not Increase Computational Power
(PhysOrg.com) -- For more than 50 years, physicists have been intrigued by the concept of closed time-like curves (CTCs). Because a CTC returns to its starting point, it raises the possibility of traveling backward in time. ...
Oct 22, 2009 |
4.1 / 5 (28) |
5
Physicists Investigate Unusual Four-Qubit Entanglement
(PhysOrg.com) -- For the first time, physicists have experimentally demonstrated a four-qubit bound-entangled state - a peculiar form of entanglement that cannot be distilled (optimized) by the usual means. ...
Sep 30, 2009 |
4.5 / 5 (20) |
5
Scientists Detect 'Fingerprint' of High-Temp Superconductivity Above Transition Temperature
(PhysOrg.com) -- A team of U.S. and Japanese scientists has shown for the first time that the spectroscopic "fingerprint" of high-temperature superconductivity remains intact well above the super chilly temperatures ...
Aug 27, 2009 |
4.6 / 5 (13) |
8
Physicists Propose Scheme for Teleporting Light Beams
(PhysOrg.com) -- Usually when physicists talk about quantum teleportation, they're referring to the transfer of quantum states from one particle to another without a physical link. Now, physicists have investigated ...
Jul 14, 2009 |
4.4 / 5 (24) |
21
Physicists find way to control individual bits in quantum computers
Physicists at the National Institute of Standards and Technology have overcome a hurdle in quantum computer development, having devised a viable way to manipulate a single "bit" in a quantum processor without ...
Jul 07, 2009 |
4.5 / 5 (13) |
3
Computing in the quantum dimension
A huge consortium of European researchers is solving some of the fundamental obstacles blocking real quantum computing applications in the short term. At the same time, it is helping to pave the way to a quantum ...
Jun 12, 2009 |
4.2 / 5 (11) |
2
Manipulating light on a chip for quantum technologies
(PhysOrg.com) -- A team of physicists and engineers at Bristol University has demonstrated exquisite control of single particles of light — photons — on a silicon chip to make a major advance towards long-sought-after ...
Jun 05, 2009 |
4.8 / 5 (18) |
0
Researchers make breakthrough in the quantum control of light
Researchers at UC Santa Barbara have recently demonstrated a breakthrough in the quantum control of photons, the energy quanta of light. This is a significant result in quantum computation, and could eventually ...
May 29, 2009 |
4.7 / 5 (15) |
0
Evidence of macroscopic quantum tunneling detected in nanowires
A team of researchers at the University of Illinois has demonstrated that, counter to classical Newtonian mechanics, an entire collection of superconducting electrons in an ultrathin superconducting wire is ...
May 27, 2009 |
4.3 / 5 (15) |
6
Too much entanglement can render quantum computers useless
(PhysOrg.com) -- "For certain tasks, quantum computers are more powerful than their classical counterparts. The task to be performed is the same for quantum or classical systems. However, the former ones can do it in a more ...
May 25, 2009 |
4.8 / 5 (21) |
4
Physicists detect entanglement of one photon shared among four locations
Scientists at the California Institute of Technology (Caltech) have developed an efficient method to detect entanglement shared among multiple parts of an optical system. They show how entanglement, in the form of beams of ...
May 08, 2009 |
4.1 / 5 (15) |
0
Quantum cat's 'whiskers' offer advanced sensors
(PhysOrg.com) -- A team led by Oxford University scientists has turned one of the key problems with quantum entangled systems - that they are easily ‘disturbed’ by their environment - into an advantage which ...
Apr 24, 2009 |
4.3 / 5 (11) |
11
Life Expectancy on the Rise -- Even for Quantum States
(PhysOrg.com) -- For the first time, scientists have succeeded in measuring and controlling the lifetime of quantum states with potential use in optoelectronic chips. This achievement is highly significant ...
Apr 14, 2009 |
5 / 5 (6) |
0
