John Levy, co-founder and CEO of superconducting computer chip manufacturer SEEQC, visited Columbia University’s Electrical Engineering Department on October 21, 2024, and delivered a comprehensive lecture on the future of quantum computing. Levy focused on the challenges and innovations surrounding scalable quantum computing, emphasizing the need for advancements in multiplexing, energy efficiency, and error correction.
Levy discussed the different quantum computing approaches, from superconducting qubits and trapped ions to photonics. While each method has its strengths, the primary challenge remains scalability. One major bottleneck for superconducting quantum computers is the Input/Output (IO) problem, where the sheer number of cables needed for each qubit makes large-scale quantum systems costly and impractical. Levy highlighted that building a quantum computer that can run algorithms is no longer a question, but scaling it remains an unsolved issue.
One of the most notable innovations Levy presented was SEEQC’s approach to quantum computing on a chip using Single Flux Quantum (SFQ) technology operating at high speed and at milliKelvin temperature. SEEQC has integrated digital control, multiplexing, and readout directly onto the qubit chip, significantly reducing the need for external cables and room-temperature electronics. This advancement enables lower latency and higher speed which contributes to greater scalability and energy efficiency. Levy also showcased an integrated five-qubit chip that SEEQC has developed, which includes built-in digital control and multiplexing.
Levy’s presentation highlighted the importance of digital quantum systems and their potential for connecting to AI chips, suggesting that the future of quantum computing could involve native quantum AI integration. He explained SEEQC’s collaboration with industrial leaders like Nvidia, aiming to create seamless chip-to-chip integration between quantum processors and GPUs for scalable AI applications.
This career event offered Columbia students, with an interest in quantum computing, insight into cutting-edge developments, emphasizing the potential of SEEQC’s chip-based approach to revolutionize the field.
