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Search results for quantum entanglement

Quantum Âé¶¹ÒùÔºics Jul 28, 2022

Speed limits for quantum phenomena have been extended to macro-sized objects

An expression for the maximum speed at which changes in macroscopic systems can occur has been derived by a theoretical physicist at RIKEN. This will deepen our understanding of quantum phenomena in systems that are not in ...

Quantum Âé¶¹ÒùÔºics Jul 27, 2022

Quantum cryptography: Making hacking futile

The Internet is teeming with highly sensitive information. Sophisticated encryption techniques generally ensure that such content cannot be intercepted and read. But in the future high-performance quantum computers could ...

Quantum Âé¶¹ÒùÔºics Jul 27, 2022

Quantum key distribution based on high-quality quantum entanglement

A method known as quantum key distribution has long held the promise of communication security unattainable in conventional cryptography. An international team of scientists has now demonstrated experimentally, for the first ...

Quantum Âé¶¹ÒùÔºics Jul 26, 2022

A new theory of quantum subsystems

When studying a complex system, scientists identify smaller pieces called subsystems that they can make sense of. By studying subsystems and the correlations between them, they reconstruct an understanding of the whole.

Quantum Âé¶¹ÒùÔºics Jul 14, 2022

Âé¶¹ÒùÔºicists harness quantum 'time reversal' to measure vibrating atoms

The quantum vibrations in atoms hold a miniature world of information. If scientists can accurately measure these atomic oscillations, and how they evolve over time, they can hone the precision of atomic clocks as well as ...

Optics & Photonics Jul 13, 2022

Researchers use quantum-inspired approach to increase LiDAR resolution

Researchers have shown that a quantum-inspired technique can be used to perform LiDAR imaging with a much higher depth resolution than is possible with conventional approaches. LiDAR, which uses laser pulses to acquire 3D ...

Optics & Photonics Jul 13, 2022

A boost in performance in fiber-integrated quantum memories

Quantum memories are one of the building blocks of the future quantum internet. Without them, it would be rather impossible to transmit quantum information over long distances and expand into a real quantum network. These ...

Optics & Photonics Jul 8, 2022

Optical demonstration of quantum fault-tolerant threshold

Dealing with experimental errors, which could occur in every step of quantum circuits, is of great importance, especially in the implementation of quantum computation. Generally speaking, quantum error correction requires ...

Quantum Âé¶¹ÒùÔºics Jun 2, 2022

Probing conjugation and parity symmetry with entangled double-strange baryons

The Beijing Spectrometer (BESIII) Collaboration has reported a new method for probing differences between matter and antimatter with extreme sensitivity. Results were published in Nature on June 2.

Quantum Âé¶¹ÒùÔºics May 30, 2022

A new quantum technique could enable telescopes the size of planet Earth

There's a revolution underway in astronomy. In fact, you might say there are several. In the past 10 years, exoplanet studies have advanced considerably, gravitational wave astronomy has emerged as a new field, and the first ...

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