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
- Chip-Based Device Opens New Doors for Augmented Reality and Quantum Computingon March 20, 2020 at 7:45 am
Applications from computing to biology The new blue OPA could be useful for trapped ion quantum computers, which require lasers in the visible spectral range for micron-scale optical stimulation.
- Quantum computingon March 19, 2020 at 12:28 pm
Quartz’s interactive email for curious minds. Escape the stale news cycle with forgotten histories, surprising facts, and vital stats. Delivered every weekday afternoon Sign me up Sign me up for the ...
- Insights: Quantum Computingon March 19, 2020 at 11:00 am
FORTUNE On-Demand ...
- Israeli quantum computing startup Quantum Machines raises $17.5 millionon March 19, 2020 at 6:16 am
Israel’s Quantum Machines, which developed hardware and software for the operation of quantum computers, said on Thursday it has raised $17.5 million in early stage funding. The round was led by ...
- Quantum Machines raises $17.5 million to speed commercialization of quantum computingon March 19, 2020 at 6:03 am
... today that it has raised $17.5 million in venture capital for its hardware and software system that’s designed to help end users leverage the potential of quantum computing. Earlier this year, the ...
- What will be the Quantum Computing Market size and the growth rate by 2026?on March 19, 2020 at 3:13 am
Quantum Computing Market 2020-2026 The Quantum Computing Market research report mainly studies the market size, latest trends and development status of the market, as well as investment opportunities, ...
- Machine learning to scale up the quantum computeron March 17, 2020 at 7:19 am
Quantum computers are expected to offer tremendous computational power for complex problems –currently intractable even on supercomputers—in the areas of drug design, data science, astronomy and ...
- Researchers set benchmark to determine achievement of quantum computingon March 17, 2020 at 6:12 am
The race toward the first practical quantum computer is in full stride. Companies, countries, collaborators, and competitors worldwide are vying for quantum supremacy. Google says it's already there.
- Framework for atomic-level characterisation of quantum computer arrays by machine learningon March 16, 2020 at 5:29 pm
Atomic-level qubits in silicon are attractive candidates for large-scale quantum computing; however, their quantum properties and controllability are sensitive to details such as the number of donor ...
- Quantum computing, AI, China, and synthetics highlighted in 2020 Tech Trends reporton March 15, 2020 at 8:42 pm
Artificial intelligence is again the first item highlighted on the list, and the tech Webb says is sparking a third wave of computing comes with positives like the role AlphaFold can play in ...
via Bing News