Q2B25 Silicon Valley | Yuvraj Mohan, Lead Quantum Technology Program Manager, Rigetti

Q2B25 Silicon Valley | Yuvraj Mohan, Lead Quantum Technology Program Manager, Rigetti

🎙 Yuvraj Mohan 👥 6K 📅 January 23, 2026 ⏱ 15 min 👁 130 📄 expert opinion 🧭 2026-08-16
Available in: English (current) Français

Keywords

superconducting qubitsJosephson junctiontunable couplers3D integrationchiplet architecture

Summary

Yuvraj Mohan, Lead Quantum Technology Program Manager at Rigetti Computing, presents an introduction to superconducting qubits at the Q2B25 Silicon Valley conference. He begins with an overview of Rigetti’s mission and history, highlighting their full-stack approach and their in-house fabrication facility. The core of the talk explains the physics and engineering of superconducting qubits: they consist of a capacitor and a nonlinear inductor (Josephson junction) that provides the anharmonicity needed to define two-level quantum states. Control and readout are achieved via microwave pulses and readout resonators. Mohan describes the evolution from fixed to tunable couplers, which improve coherence and gate speeds. He then explains the Bloch sphere as a representation of qubit states and how microwave pulses manipulate them. The presentation covers the integration of chips into dilution refrigerators and the associated control electronics. Advantages of superconducting qubits include fast gate times (60-70 ns) and compatibility with CMOS manufacturing. Scaling strategies include 3D signaling and chiplet-based architectures, with Rigetti demonstrating entanglement across chip boundaries. The talk concludes with a roadmap to 150+ qubits in 2026 and 1000+ in 2027.

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Critical Evaluation

Value of the Information & Strength of the Argument

The presentation provides a clear and technically accurate overview of superconducting qubits, covering both fundamental principles and practical engineering challenges. The argumentation is coherent, progressing from basic components to system integration and scaling. The speaker’s expertise is evident, and the claims about gate speeds and coherence improvements are consistent with published literature. However, the talk is promotional in nature, emphasizing Rigetti’s achievements and roadmap without critical comparison to other qubit modalities or discussion of limitations.

Scientific Rigor, Source Quality, Title Accuracy

The talk is a corporate presentation, and no external scientific sources are cited. The only references are to Rigetti’s own materials and the Q2B conference. The title accurately reflects the content, and the presentation is technically rigorous within its scope. The lack of citations and the promotional tone slightly reduce the overall scientific rigor.

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Title / Content Match

The title accurately reflects the content: a presentation by Yuvraj Mohan from Rigetti at the Q2B25 Silicon Valley conference.

Quality & Reliability

7/10

The speaker is a lead program manager at Rigetti, a well-known quantum computing company. The content is technical and consistent with established knowledge in superconducting qubits. However, it is a corporate presentation with promotional elements, and no external sources are cited beyond the company's own materials.

Key Moments

Cited Sources

Concurring Sources

Contribution & Novelties

The talk provides a concise, expert-level overview of superconducting qubits, with particular emphasis on Rigetti’s chiplet-based scaling approach and 3D signaling technology. It offers insights into the practical challenges of scaling quantum processors and the company’s roadmap. The presentation is valuable for those seeking an industry perspective on the state of superconducting quantum computing.

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101 words

Radar Profile

The radar profile shows high scores in technical level and information quality, reflecting the expert nature of the talk. The lower score in information quantity is due to the relatively short duration and focus on a single topic. Overall, the talk is well-balanced, with a strong emphasis on technical depth.

Reliability 7/10