Photonic shows distributed quantum entanglement between modules
Photonic has hit a significant milestone on the path to scalable quantum computer systems.
While many existing quantum architectures achieve entanglement within modules, Photonic has demonstrated quantum entanglement between modules. This enables scalable entanglement distribution for quantum computers.
Photonic’s approach is based on optically linked silicon spin qubits with a native telecom networking interface, meaning that it can integrate with the infrastructure and platforms of data centres. This can execute a remote gate sequence – the teleported CNOT – between silicon-spin qubits located in different cryostats connected by telecom fibre.
“The crucial role that entanglement distribution will play in unlocking the commercial promise of quantum computing cannot be overstated. Large-scale quantum algorithms running across multiple quantum computers require enormous amounts of distributed entanglement to work well,” said Dr. Stephanie Simmons, Founder and Chief Quantum Officer at Photonic.
“These demonstrations highlight the promise of our distinctive architectural approach to solve the challenge of scaling beyond single nodes. While there is still much work ahead, it’s important to acknowledge the pivotal role that entanglement distribution must play in shaping quantum system designs.”
The company works closely with Microsoft. including the Microsoft Azure cloud, on quantum entanglement. Three demonstrations, culminating in the teleported CNOT gate sequence, established and consumed distributed quantum entanglement—entanglement between qubits not adjacent to one another or even in the same cryostat.
“Last November, we announced a strategic collaboration with Photonic to co-innovate on quantum technologies to accelerate scientific discovery. These recent developments showcase a fundamental capability: entanglement distribution over long distances. With these advancements, we’re progressing toward the next stages of networked quantum computing,” said Krysta Svore, Distinguished Engineer and Vice President of Advanced Quantum Development at Microsoft.
“Photonic has a highly disruptive technology approach,” said David Shaw, Chief Analyst with Global Quantum Intelligence (GQI). “Photonic’s silicon spin qubits with optical photonic interconnects hold the enticing prospect of synergies in quantum communications and networking. These recent demonstrations are evidence on the way forward. The future path to 200kHz for distributed entanglement with 99.8% fidelity is very striking. This would enable a wide variety of applications. This sets a new bar for quantum roadmaps that others will be under pressure to follow. This stands to accelerate the industry.”
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