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 Computing: A New Solution for Supply Chain and Logistics Optimizationon August 4, 2021 at 1:25 pm
Constrained optimization can help supply chain planners stay ahead. World events ranging from the Suez Canal blockage to the global COVID-19 pandemic have shown how susceptible our supply chain ...
- Quantum Computing Enables Unprecedented Materials Science Simulationson August 4, 2021 at 1:12 pm
Researchers have for the first time used a quantum computer to generate accurate results from materials science simulations that can be verified with practical techniques. The team used a form of ...
- Quantum Computing Inc. Announces QUBT Universityon August 4, 2021 at 5:31 am
Program Helps Students Learn How to Solve Complex Optimization Problems with Access to Qatalyst and Quantum Educational ResourcesLEESBURG, Va., Aug. 04, 2021 (GLOBE NEWSWIRE) -- Quantum Computing Inc.
- Google researchers made a time crystal inside a quantum computeron August 3, 2021 at 11:45 am
A time crystal is a unique phase of matter that flips between two configurations with no energy input necessary – first proposed in 2012, this type of matter has now been created inside a quantum comp ...
- Running quantum software on a classical computeron August 3, 2021 at 5:08 am
Two physicists, from EPFL and Columbia University, have introduced an approach for simulating the quantum approximate optimization algorithm using a traditional computer. Instead of running the ...
- Quantum Computers Are Coming, But How Do We Stay Safe?on August 2, 2021 at 10:51 pm
Quantum computers aren’t some futuristic fantasy that you can couple with hoverboards and interstellar space travel, they’re being developed right now. Tech industry giants, including the likes of ...
- Quantum computing's next big challenge: A quantum skills shortageon August 2, 2021 at 7:42 am
Increasing qubit counts and improving error correction is hard enough. But quantum computing companies are finding one of the biggest challenges might be to find the right people to do that.
- 2021 Best Insights From Quantum Computing Top Leaderson July 31, 2021 at 4:07 pm
Quantum Computing (QC) proof of concept (POC) projects are growing in Q4 2021 with commercialization pilots before 2025 and broader adoption before 2030.
- Quantum computers: The future on its wayon July 30, 2021 at 10:48 pm
Perhaps it can be argued that now there is no longer any doubt that scientists and engineers will soon create commercial quantum computers. The companies and countries are betting big on this ...
- Four Ways Quantum Computing Could Change The Worldon July 30, 2021 at 4:20 am
The stakes are high, and with so many major players, the arrival of full-scale quantum computers could be around the corner.
via Bing News