# Browse Physics

Valid search terms include: subject, keyword, author of article, author of highlighted article, article citation (e.g. Physics 3, 16 (2011))

141.

Viewpoint

142.

Viewpoint

143.

Synopsis

144.

A system familiar in condensed matter—particles on a hexagonal lattice—could be a useful initial state for a one-way quantum computer.

145.

A miniature time machine, possibly based on a wormhole through spacetime, could be used to break a super-secure quantum code.

146.

Viewpoint

147.

Trend

148.

Viewpoint

149.

Viewpoint

150.

Creating a practical solid-state quantum computer is seriously hard. Getting such a computer to operate at room temperature is even more challenging. Is such a quantum computer possible at all? If so, which schemes might have a chance of success?

151.

Viewpoint

152.

A rigorous estimate shows that an error correction code for a scalable quantum computer can accommodate error at the 0.1% level—about ten times more tolerant than most other methods.

153.

Preparing a harmonic oscillator in a state with a well-defined energy is a tricky business. With the new tools provided by cavity and circuit quantum electrodynamics it is now possible to make these pure quantum states and watch how they evolve in time.

154.

Large-scale quantum computers are hard to construct because quantum systems easily lose their coherence through interaction with the environment. Researchers have tried to avoid this problem by using geometric phase shifts in the design of quantum gates to perform information processing. Experiments and simulations have shown that these gates may be tolerant to certain types of faults, and may therefore be useful for robust quantum computation.

155.

Viewpoint

156.

Viewpoint

157.

Synopsis

158.

Synopsis

159.

Focus

160.

Focus