The global quantum internet will require long-lived, telecommunications-band photon–matter interfaces manufactured at scale. It is essential to develop the communications technology that enables these qubits to link together at scale and stable, long-lived qubits that supply processing power to make this a reality.

A study has indicated that silicon can produce some of the most stable and long-lived qubits. Despite the overwhelming potential of the silicon quantum platform, the optical detection of individually addressable photon–spin interfaces in silicon has remained elusive. In a new study, scientists offer proof of the principle that T centers, a specific luminescent defect in silicon, can provide a ‘photonic link’ between qubits. [1]

Figure 1. Missing Photonic Link to Enable All-Silicon 'Quantum Internet'

Figure 1 shows Earlier, research has suggested that the silicon could be used to make some of the most stable and long-lived qubits in the industry. A quantum computer uses qubits to run multidimensional quantum algorithms, unlike a traditional computer. In addition, the development of quantum computers also requires communication technology that will help link the qubits together at a much larger scale.

“This work is the first measurement of single T centres in isolation, and actually, the first measurement of any single spin in silicon to be performed with only optical measurements,” said Stephanie Simmons, Canada Research Chair in Silicon Quantum Technologies. [2]

"With T centres, you can build quantum processors that inherently communicate with other processors," Simmons says. "When your silicon qubit can communicate by emitting photons (light) in the same band used in data centres and fiber networks, you get these same benefits for connecting the millions of qubits needed for quantum computing." [3]

Developing quantum technology using silicon provides opportunities to rapidly scale quantum computing. The global semiconductor industry is already able to inexpensively manufacture silicon computer chips at scale, with a staggering degree of precision. This technology forms the backbone of modern computing and networking, from smartphones to the world's most powerful supercomputers.

"By finding a way to create quantum computing processors in silicon, you can take advantage of all of the years of development, knowledge, and infrastructure used to manufacture conventional computers, rather than creating a whole new industry for quantum manufacturing," Simmons says.[4]

References:

1. https://www.techexplorist.com/scientists-found-missing-photonic-link-enable-silicon-quantum-internet/52479/
2. https://gadgets360.com/science/news/quantum-computing-internet-silicon-qubits-algorithms-communication-3156801
3. https://www.sciencedaily.com/releases/2022/07/220713114553.htm
4. https://phys.org/news/2022-07-photonic-link-enable-all-silicon-quantum.html

Cite this article:

Thanusri swetha J (2022), Missing Photonic Link to Enable All-Silicon 'Quantum Internet' , Anatechmaz, pp.146