Search results for quantum computer:
Creating a six-qubit cluster state
Nov 02, 2009 |
4.6 / 5 (10) |
2
(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 ...
Study Shows Time Traveling May Not Increase Computational Power
Oct 22, 2009 |
4.1 / 5 (26) |
5
(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. ...
Buffer gas cooling could open up the field of ultracold physics
Sep 17, 2009 |
4.8 / 5 (22) |
2
(PhysOrg.com) -- "Scientists have been making Bose-Einstein Condensates [BECs] for nearly 15 years," Charlie Doret tells PhysOrg.com. "Essentially all BEC research to date, however, begins with laser cooling. Unfortunately, ...
Proposed Quantum Computer Consists of Billions of Electron Spins
Sep 09, 2009 |
4.5 / 5 (26) |
23
(PhysOrg.com) -- While researchers have already demonstrated the building blocks for few-bit quantum computers, scaling these systems up to large quantum computers remains a challenge. One of the biggest problems ...
First-ever calculation performed on optical quantum computer chip
Sep 03, 2009 |
4.6 / 5 (34) |
10
(PhysOrg.com) -- A primitive quantum computer that uses single particles of light (photons) whizzing through a silicon chip has performed its first mathematical calculation. This is the first time a calculation ...
Physicists Demonstrate Quantum Memory with Matter Qubits
Jul 03, 2009 |
4.3 / 5 (21) |
2
(PhysOrg.com) -- For the first time, scientists have successfully operated a quantum gate between two remote particles of matter, marking an important step toward the development of a quantum computer. In ...
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 ...
Physicists Propose New Ultracold Scheme for Scalable Quantum Information Processing
Jun 03, 2009 |
4.1 / 5 (14) |
1
(PhysOrg.com) -- Since 1994, when Peter Shor famously showed that a quantum computer could factor large numbers exponentially faster than any current classical algorithm, physicists have been investigating ...
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 ...
Ion trap quantum computing
May 12, 2009 |
4.5 / 5 (11) |
1
(PhysOrg.com) -- “Right now, classical computers are faster than quantum computers,” René Stock tells PhysOrg.com. “The goal of quantum computing is to eventually speed up the time scale of solving certain important proble ...
Post-Quantum Correlations: Exploring the Limits of Quantum Nonlocality
May 07, 2009 |
4 / 5 (22) |
20
(PhysOrg.com) -- When it comes to nonlocal correlations, some correlations are more nonlocal than others. As the subject of study for several decades, nonlocal correlations (for example, quantum entanglement) ...
Fock states could hold clues to quantum memory components
Dec 23, 2008 |
4.5 / 5 (13) |
10
(PhysOrg.com) -- “Fock states will play a role in the future of quantum computing,” Andrew Cleland tells PhysOrg.com. “We have completed the first experimental measurement of the time decay of Fock states in a superconducting quantu ...
How Time-Traveling Could Affect Quantum Computing
Nov 20, 2008 |
4 / 5 (121) |
33
(PhysOrg.com) -- If space-time were constructed in such a way that you could travel back in time, it would create some pretty strange effects. One of these oddities, as many people know, is the “grandfather paradox.” Here, ...
Physicists use Bose-Einstein condensates to enhance factoring algorithm
Nov 10, 2008 |
4.4 / 5 (54) |
11
(PhysOrg.com) -- Theoretically, quantum computing has the potential to work more efficiently and accurately than classical computing for certain processes, such as factoring. But quantum methods are experimentally ...
Scientists identify quantum differences between light and heavy water
Aug 26, 2008 |
4.4 / 5 (55) |
16
Scientists know that light water (H2O) and heavy water (D2O) have similar but not identical structures. Using quantum mechanics, researchers have recently identified several differences between the two water ...
