News tagged with quantum systems
Working out a timescale for quantum operations
Jun 17, 2009 |
4.7 / 5 (9) |
0
One of the issues affecting quantum systems is coherence. Understanding coherence and how it breaks down (decoherence) is one of the keys to putting together a powerful quantum computer. And, because wires made from metal ...
Search results for quantum systems
The Light of Silence
May 02, 2008 |
4.4 / 5 (18) |
0
Scientists have found a way of protecting quantum systems against noise using adaptively ‘shaped’ pulses of laser light. Quantum systems are notoriously fragile as interactions with their surroundings disturb them – rather ...
Pushing quantum mechanics to higher levels
Aug 11, 2009 |
3.7 / 5 (9) |
1
Scientists at UC Santa Barbara have devised a new type of superconducting circuit that behaves quantum mechanically -- but has up to five levels of energy instead of the usual two. The findings are published ...
Quantum leap in hi-tech performance
Sep 25, 2008 |
4.3 / 5 (21) |
1
For years, physicists have been heralding the revolutionary potential of using quantum mechanics to build a new generation of supercomputers, unbreakable codes, and ultra-fast and secure communication networks.
Scientists show quantum systems could flout physics law
Jun 02, 2008 |
4.3 / 5 (56) |
13
Scientists in the Weizmann Institute's Faculty of Chemistry, together with colleagues in Germany, have made a startling prediction: Simply 'taking the temperature' of certain quantum systems at frequent intervals might cause ...
Too much entanglement can render quantum computers useless
May 25, 2009 |
4.8 / 5 (20) |
4
(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 ...
Quantum paradox directly observed -- a milestone in quantum mechanics
Mar 04, 2009 |
4.1 / 5 (35) |
13
In quantum mechanics, a vanguard of physics where science often merges into philosophy, much of our understanding is based on conjecture and probabilities, but a group of researchers in Japan has moved one ...
Quantum cat's 'whiskers' offer advanced sensors
Apr 24, 2009 |
4.6 / 5 (10) |
11
(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 ...
Distinguishing decoherence in quantum systems
Apr 22, 2008 |
4.6 / 5 (56) |
4
“Over the years, work on Bose-Einstein condensates, known as BEC, have led to more and more interesting phenomena,” Artur Widera tells PhysOrg.com. “This is because they behave according to quantum mechanics, and are fairly ...
Fighting tomorrow's hackers
Technology / Computer Sciences
Feb 05, 2009 |
4 / 5 (1) |
0
One of the themes of Dan Brown's The Da Vinci Code is the need to keep vital and sensitive information secure. Today, we take it for granted that most of our information is safe because it's encrypted. Every time we use a ...
Solving big problems with new quantum algorithm
Nov 09, 2009 |
4.6 / 5 (33) |
0
(PhysOrg.com) -- In a recently published paper, Aram Harrow at the University of Bristol and colleagues from MIT in the United States have discovered a quantum algorithm that solves large problems much faster ...
List of search results for quantum systems
