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 findings appear online Sept. 5 in the journal Nature.
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
[google_news title=”” keyword=”quantum computing” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Quantum computing
- Chandeliers, ‘qubits’ and Schrödinger’s cat: Inside the bizarre world of quantum computingon May 11, 2024 at 12:00 pm
In the quantum realm, the laws of physics are different. Now its mind-bending tech could soon transform our lives. How does it work?
- Quantum Computing Inc (QUBT) Stock creates opportunities due to its volume and complexityon May 11, 2024 at 11:19 am
The stock is trading -58.70 percent below its 52-week high and 17.94 percent above its 52-week low. For example, looking both at the price and the high and low measurements of 52 weeks will give you a ...
- 'World's purest silicon' could lead to 1st million-qubit quantum computing chipson May 11, 2024 at 5:00 am
Scientists engineer the 'purest ever silicon' to build reliable qubits that can be manufactured to the size of a pinhead on a chip and power million-qubit quantum computers in the future.
- The second quantum computing revolutionon May 10, 2024 at 12:45 pm
Madison, students regularly trap single electrons inside silicon chips. They know where the electrons are. They know when they move. And they can monitor that motion in ...
- Researchers develop compiler acceleration technology for quantum computerson May 9, 2024 at 1:47 pm
Researchers have succeeded in developing a technique to quickly search for the optimal quantum gate sequence for a quantum computer using a probabilistic method.
- The Future Of Climate Could Be In Quantum Computingon May 7, 2024 at 7:43 am
Quantum computing has a number of advantages over other technologies in terms of accelerating our progress with reducing climate change.
- New super-pure silicon chip opens path to powerful quantum computerson May 7, 2024 at 2:00 am
Researchers at the Universities of Melbourne and Manchester have invented a breakthrough technique for manufacturing highly purified silicon that brings powerful quantum computers a big step closer.
- How Schrödinger's cat could make quantum computers work betteron May 6, 2024 at 8:00 am
A quantum bit inspired by Schrödinger’s cat can resist making errors for an unprecedentedly long time, which makes it a candidate for building less error-prone quantum computers ...
- Pritzker eyes a $20 billion quantum-computing campuson May 6, 2024 at 3:31 am
PsiQuantum would be the anchor of a much larger project that Illinois hopes will make it the center of this next-generation computing technology.
- Better Quantum Computing Stock: IBM vs. IonQon May 5, 2024 at 12:02 pm
IBM is growing slower than IonQ and hasn't generated significant revenue from its quantum computing systems yet. However, it's firmly profitable and supporting the future growth of its quantum ...
via Bing News