Quantum computing

MIT researchers have observed mysterious Majorana fermions in islands of gold. The discovery could lead to new family of robust qubits for quantum computing.

First sighting of mysterious Majorana fermion on a common metal

Physicists’ discovery could lead to a new family of robust qubits for quantum computing.

April 10, 2020

New “refrigerator” super-cools molecules to nanokelvin temperatures

Technique may enable molecule-based quantum computing.

April 8, 2020

An MIT team found a way to “recruit” normally disruptive quantum bits (qubits) in diamond to, instead, help carry out quantum operations. This approach could be used to help scale up quantum computing systems.

Novel method for easier scaling of quantum devices

System “recruits” defects that usually cause disruptions, using them to instead carry out quantum operations.

March 5, 2020

President Reif testifies before Congress on U.S. competitiveness

“To stay ahead, the U.S. needs to do more to capitalize on our own strengths,” he tells representatives.

February 27, 2020

In a diamond crystal, three carbon atom nuclei (shown in blue) surround an empty spot called a nitrogen vacancy center, which behaves much like a single electron (shown in red). The carbon nuclei act as quantum bits, or qubits, and it turns out the primary source of noise that disturbs them comes from the jittery “electron” in the middle. By understanding the single source of that noise, it be...

Correcting the “jitters” in quantum devices

A new study suggests a path to more efficient error correction, which may help make quantum computers and sensors more practical.

February 18, 2020

An ion-trap chip (at center) is used to hold two calcium and strontium ions still as the qubits they house become entangled. The inset shows a magnified, false-color image of light scattering from each ion in the trap as they are laser cooled.

A trapped-ion pair may help scale up quantum computers

Qubits made from strontium and calcium ions can be precisely controlled by technology that already exists.

January 28, 2020

Researchers from MIT, Google, and elsewhere have designed a novel method for verifying when quantum processors have accurately performed complex computations that classical computers can’t. They validate their method on a custom system (pictured) that’s able to capture how accurately a photonic chip (“PNP”) computed a notoriously difficult quantum problem.

How to verify that quantum chips are computing correctly

A new method determines whether circuits are accurately executing complex operations that classical computers can’t tackle.

January 13, 2020

An MIT-invented circuit uses only a nanometer-wide “magnetic domain wall” to modulate the phase and magnitude of a spin wave, which could enable practical magnetic-based computing — using little to no electricity.

Toward more efficient computing, with magnetic waves

Circuit design offers a path to “spintronic” devices that use little electricity and generate practically no heat.

November 28, 2019

MIT researchers detect a single quantum vibration within a diamond sample (shown here) at room temperature.

Scientists observe a single quantum vibration under ordinary conditions

Studying a common material at room temperature, researchers bring quantum behavior “closer to our daily life.”

October 6, 2019

MIT researchers have fabricated a diamond-based quantum sensor on a silicon chip using traditional fabrication techniques (pictured), which could enable low-cost quantum hardware.

Quantum sensing on a chip

Researchers integrate diamond-based sensing components onto a chip to enable low-cost, high-performance quantum hardware.

September 25, 2019

MIT and Dartmouth College researchers developed a tool that detects new characteristics of non-Gaussian “noise” that can destroy the fragile quantum superposition state of qubits, the fundamental components of quantum computers.

Uncovering the hidden “noise” that can kill qubits

New detection tool could be used to make quantum computers robust against unwanted environmental disturbances.

September 16, 2019

Images showing interference patterns (top) and a Wilson loop (bottom) were produced by the researchers to confirm the presence of non-Abelian gauge fields created in the research.

Exotic physics phenomenon is observed for first time

Observation of the predicted non-Abelian Aharonov-Bohm Effect may offer step toward fault-tolerant quantum computers.

September 5, 2019

A bright fluorescent quantum defect can be a tool to upgrade current biomedical imaging systems, looking at even smaller tumors through the defect emission.

A single-photon source you can make at home

Shining light through household bleach creates fluorescent quantum defects in carbon nanotubes for quantum computing and biomedical imaging.

August 9, 2019

An artistic impression depicts ultra-quantum matter: from the cold topological matter (blue) to hot, strongly correlated metal (red).

Ultra-Quantum Matter research gets $8 million boost

MIT’s Senthil Todadri and Xiao-Gang Wen will study highly entangled quantum matter in a collaboration supported by the Simons Foundation.

May 29, 2019

MIT researchers have designed a new single-photon emitter that generates, at room temperature, more of the high-quality photons that could be useful for practical quantum computers, quantum communications, and other quantum devices.

Generating high-quality single photons for quantum computing

New dual-cavity design emits more single photons that can carry quantum information at room temperature.

May 14, 2019

MIT News | Massachusetts Institute of Technology

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