Yale University researchers have demonstrated one of the key steps in building the architecture for modular quantum computers: the “teleportation” of a quantum gate between two qubits, on demand.
The key principle behind this new work is quantum teleportation, a unique feature of quantum mechanics that has previously been used to transmit unknown quantum states between two parties without physically sending the state itself. Using a theoretical protocol developed in the 1990s, Yale researchers experimentally demonstrated a quantum operation, or “gate,” without relying on any direct interaction. Such gates are necessary for quantum computation that relies on networks of separate quantum systems — an architecture that many researchers say can offset the errors that are inherent in quantum computing processors.
Through the Yale Quantum Institute, a Yale research team led by principal investigator Robert Schoelkopf and former graduate student Kevin Chou is investigating a modular approach to quantum computing. Modularity, which is found in everything from the organization of a biological cell to the network of engines in the latest SpaceX rocket, has proved to be a powerful strategy for building large, complex systems, the researchers say. A quantum modular architecture consists of a collection of modules that function as small quantum processors connected into a larger network.
Modules in this architecture have a natural isolation from each other, which reduces unwanted interactions through the larger system. Yet this isolation also makes performing operations between modules a distinct challenge, according to the researchers. Teleported gates are a way to implement inter-module operations.
“Our work is the first time that this protocol has been demonstrated where the classical communication occurs in real-time, allowing us to implement a ‘deterministic’ operation that performs the desired operation every time,” Chou said.
Fully useful quantum computers have the potential to reach computation speeds that are orders of magnitude faster than today’s supercomputers. Yale researchers are at the forefront of efforts to develop the first fully useful quantum computers and have done pioneering work in quantum computing with superconducting circuits.
Quantum calculations are done via delicate bits of data called qubits, which are prone to errors. In experimental quantum systems, “logical” qubits are monitored by “ancillary” qubits in order to detect and correct errors immediately. “Our experiment is also the first demonstration of a two-qubit operation between logical qubits,” Schoelkopf said. “It is a milestone toward quantum information processing using error-correctable qubits.”
Learn more: Yale researchers ‘teleport’ a quantum gate
The Latest on: Quantum computing
via Google News
The Latest on: Quantum computing
- Quantum software company tackles big computing challengeson November 26, 2020 at 9:36 am
My mission is to demystify quantum computing,” says Ilyas Khan, who is founder and chief executive of Cambridge Quantum Computing (CQC) – a UK-based provider of software for quantum computers. Khan is ...
- GENCI Announces €1.5M for Paris Region Quantum Computing Program, Plans Quantum Partition for Exascaleon November 24, 2020 at 10:00 am
The Paris Region quantum ecosystem is extremely rich in academic groups, startups, expertise and talents, and also global companies that ...
- Global Quantum Computing Industryon November 24, 2020 at 6:30 am
Abilities of Classical Computing are Reaching Saturation. A Projected $513.3 Million Opportunity by 2027 Ushers in Quantum Computing as ...
- 6 experts share quantum computing predictions for 2021on November 24, 2020 at 5:47 am
More companies will look for specific use cases that can be leveraged sometime in the next decade, as computers improve and the number of qubits available continues to grow.
- 4 Quantum Computing Stocks Fueling World-Disrupting Technologyon November 24, 2020 at 2:01 am
Quantum computing is the future. And the future has arrived. The quantum computing market is forecast to reach $2.2 billion by 2026, according to IQT Research. The number of installed quantum ...
- NPL and Cambridge Quantum Computing (CQC) collaborate in quantum computingon November 24, 2020 at 1:56 am
Scientists at the National Physical Laboratory (NPL) are working with Cambridge Quantum Computing (CQC) to accelerate research and development to support the commercialisation and optimisation of ...
- Imperfections Lower the Simulation Cost of Quantum Computerson November 23, 2020 at 11:19 am
Classical computers can efficiently simulate the behavior of quantum computers if the quantum computer is imperfect enough.
- To do in 2021: Get up to speed with quantum computing 101on November 23, 2020 at 5:47 am
The first step is to understand qubits and superposition. The next one is to get a handle on the business advantage that this technology represents.
- Don’t delay, fix your data now for when quantum computing is fully readyon November 20, 2020 at 8:04 am
Tiernan Ray explains that software startup Zapata Computing of Boston, which makes developer tools to program quantum computers, says companies need to get a handle on things like data cleaning and ...
- Zapata Computing Raises $38M Series B to Accelerate Commercial Quantum Adoptionon November 20, 2020 at 7:27 am
Zapata Computing, Inc., a leading enterprise software company for NISQ-based quantum applications, today announced it has ...
via Bing News