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Novel Experiment Opens the Way for Active Quantum Control Techniques

Novel Experiment Opens the Way for Active Quantum Control Techniques

One of the famous examples of the weirdness of quantum mechanics is the paradox of Schrödinger's cat. [More]
Closer to Proving Reliability of Quantum Computers

Closer to Proving Reliability of Quantum Computers

Physicists are one step closer to proving the reliability of a quantum computer – a machine which promises to revolutionise the way we trade over the internet and provide new tools to perform powerful simulations. [More]
Quantum Entanglement of Particles Preserved When Passing Through an Amplifier

Quantum Entanglement of Particles Preserved When Passing Through an Amplifier

Physicists Sergei Filippov (MIPT and Russian Quantum Center at Skolkovo) and Mario Ziman (Masaryk University in Brno, Czech Republic, and the Institute of Physics in Bratislava, Slovakia) have found a way to preserve quantum entanglement of particles passing through an amplifier and, conversely, when transmitting a signal over long distances. Details are provided in an article published in the journal Physical Review A (see preprint). [More]
CQT Paper on Self-Testing of the Singlet Earns Journal Award

CQT Paper on Self-Testing of the Singlet Earns Journal Award

Imagine you buy a device that promises to make entangled qubits – pairs of photons, say, that you want to use for sending a secret message or doing a quantum computation. [More]
Innovative Laser May Play Crucial Role in Quantum Computer Development

Innovative Laser May Play Crucial Role in Quantum Computer Development

Dartmouth scientists and their colleagues have devised a breakthrough laser that uses a single artificial atom to generate and emit particles of light. The laser may play a crucial role in the development of quantum computers, which are predicted to eventually outperform today's most powerful supercomputers. [More]
Novel Mechanism for How to Make Universal Topological Quantum Computers

Novel Mechanism for How to Make Universal Topological Quantum Computers

So far it exists mainly in theory, but if invented, the large-scale quantum computer would change computing forever. Rather than the classical data-encoding method using binary digits, a quantum computer would process information millions of times faster through the use of quantum states of matter. [More]
Highly Charged Ions Hold Potential for Processing Quantum Information

Highly Charged Ions Hold Potential for Processing Quantum Information

The world is mostly neutral. That is, most of the atoms in our environment are electrically neutral. The number of electrons in the outer parts of atoms equals the number of protons at the centers of atoms. As one or more electrons are plucked away from the atoms, the remaining electrons feel a much stronger positive pull from the nucleus. [More]
Microsoft and Niels Bohr Institute QDev Partner to Realise Quantum Information

Microsoft and Niels Bohr Institute QDev Partner to Realise Quantum Information

The next great leap in the computing world is expected to be quantum technology and, as part of their investment in research into quantum information technology, Microsoft is collaborating with Professor Charles Marcus, head of the Center for Quantum Devices (QDev) at the Niels Bohr Institute at the University of Copenhagen. [More]
Fractional Quantum Hall Effect Observed in Bilayer Graphene

Fractional Quantum Hall Effect Observed in Bilayer Graphene

Columbia researchers have observed the fractional quantum Hall effect in bilayer graphene and shown that this exotic state of matter can be tuned by an electric field. [More]
Superconducting Qubits and Devices Constructed Out of Silicon

Superconducting Qubits and Devices Constructed Out of Silicon

Theorists propose a way to make superconducting quantum devices such as Josephson junctions and qubits, atom-by-atom, inside a silicon crystal. Such systems could combine the most promising aspects of silicon spin qubits with the flexibility of superconducting circuits. The researcher's results have now been published in Nature Communications. [More]