Atlantic Quantum

Happy to share Atlantic Quantum’s exciting results at the APS Global Physics Summit 2025! Our research scientist, Konstantin Nesterov, presented our latest work on high-fidelity readout of fluxonium qubits. Achieving high-fidelity qubit readout is a critical step toward building a fault-tolerant quantum computer. Building on his theoretical framework for optimizing fluxonium qubit readout, we successfully demonstrated state-of-the-art readout fidelity (99.89%!) with our millisecond-coherence fluxonium qubits. This achievement was made possible through our strong teamwork and expertise in the design, fabrication, and calibration of quantum processors. If you're at the March Meeting and want to learn more, connect with the Atlantic Quantum team: Bharath Kannan, Konstantin Nesterov, Ants Remm, Amr Osman, Jonas Bylander, Leon Ding, Simon Gustavsson, Will Oliver.

🌊 Meet Atlantic Quantum at APS March Meeting 2025 🌊 We're excited to join the quantum community at the American Physical Society’s Global Physics Summit in Anaheim, CA, for a week of insightful discussions on the future of quantum computing. Atlantic Quantum’s Konstantin Nesterov will present a theoretical framework to optimize dispersive qubit readout while mitigating measurement-induced state transitions (MISTs)—a key challenge in fault-tolerant quantum computing. 🎙️ Talk: Predicting Measurement-Induced State Transitions in Fluxonium Readout 📅 Thursday, March 20 | ⏰ 9:00 AM |📍Room 161 (Level 1) Check out our featured talk schedule with contributions by our team members and collaborators below. Atlantic Quantum contributors include Bharath Kannan, Youngkyu Sung, Simon Gustavsson, Leon Ding, Jonas Bylander, Tim Menke, Will Oliver, Amr Osman, Anselme Massimino, and Ants Remm. See you there! 👋 #QuantumComputing | #Quantum | #APSMarch2025 | #APS2025

"Emerging technologies like artificial intelligence and quantum computing will define the future of national security, geopolitical power, and human civilization," newly confirmed CIA Director John Ratcliffe stated in his Senate hearing last month. Next week, our Co-Founder & CEO Bharath Kannan will speak at the "AI+ Compute & Connectivity Summit," hosted by the Special Competitive Studies Project - SCSP. This summit brings together innovators, policymakers, industry leaders, and academic experts to discuss how next-generation compute technologies can be harnessed to advance U.S. national security and promote economic growth. Fellow speakers include Ylli Bajraktari (SCSP), Keith Strier (AMD), Chris Miller (Tufts University), Yan Zheng (IQT (In-Q-Tel)), and more. Register now to be part of the conversation: https://lnkd.in/e8nSRvFx #QuantumComputing #AI #SCSPTech #ComputeSummit #DualUse

Join the Atlantic Quantum team! We're #hiring for a Quantum Research Scientist (Device Theory) with strong expertise in modeling and simulating quantum gates and readout. In this role, you will work closely with experimentalists, applying theory to real experiments. 💼 Why Atlantic Quantum? We are developing the world’s first quantum integrated circuit for utility-scale quantum computing. Our mission is to develop a high-performance solution that excels across all three key industry benchmarks—speed, fidelity, and scalability.   🔍 What You’ll Do: + Build models of coupled superconducting qubit systems. + Simulate circuit properties and dynamics. + Develop and simulate single- and two-qubit gate and readout schemes. 🛠️ What We’re Looking For: + PhD in Physics, Electrical Engineering, or related field (or MSc with 3+ years of experience). + Experience in design and Hamiltonian simulation of circuit QED and superconducting qubit devices. + Proficiency in Python or similar languages. 🚀 Ready to make an impact? Apply today using the link in the comments below. #MIT #QuantumComputing #Quantum #CareerOpportunity

We’re #hiring for a Research Scientist (Superconductor Digital Electronics) to join our design team! If you have experience in superconductor digital logic circuits, we want to hear from you. 💼 Why Atlantic Quantum? We are developing the world’s first quantum integrated circuit for utility-scale quantum compute. Our mission is to develop a high-performance solution that excels across all three key industry benchmarks—speed, fidelity, and scalability.   🔍 What You’ll Do: + Designing and simulating superconductor digital logic circuits for qubit control and readout. + Identifying and addressing challenges in large-scale-integration of superconductor digital electronics. + Transforming conceptual ideas into physical prototypes. + Collaborating with our fabrication, software, and measurement teams. 🛠️ What We’re Looking For: + Relevant PhD or MSc with 3+ years of work experience. + Research or industry experience in superconductor digital logic circuits. + Proficiency with computer-aided design tools and electromagnetic simulation tools. 🚀 Ready to make an impact? Apply today using the link in the comments below. #MIT #QuantumComputing #CareerOpportunity #WeAreAtlantic

Thank you Rhie Lim and Kendall On Air for sitting down with our Co-Founder & CEO Bharath Kannan for this thoughtful conversation. We appreciate the opportunity to discuss how our quantum integrated circuit addresses the scalability challenge in quantum computing. This is the final installation of a three-part series on superconducting quantum computing: 1️⃣ Interview with MIT Prof. Will Oliver on his work at the Massachusetts Institute of Technology and with MIT Lincoln Laboratory: > https://lnkd.in/eHwrCzMT 2️⃣ Tour of the cleanroom at MIT.nano and the MIT EQuS lab: > https://lnkd.in/e68HfPjF 3️⃣ Interview with Bharath on his motivating philosophy and Atlantic Quantum's focus on building scalable systems to address real-world challenges: > https://lnkd.in/eSYBfG-B Many thanks to Rhie for spotlighting this work and the vibrant deep tech ecosystem supported by The Engine & Engine Ventures!

Quantum computers today don’t work. They error out too much, they're not designed to scale, and they're prohibitively expensive.   Atlantic Quantum was founded to address these challenges. Here’s how:   🤖 The Soul of a New Machine  At the heart of our solution is our fluxonium-based superconducting qubit architecture, which achieve 20X improved single-qubit gate fidelities and 10X improved two-qubit gate fidelities compared to competing state-of-the-art quantum processors.     ⚡️ The First Quantum Integrated Circuit We are now integrating our fluxonium qubits with cryogenic controllers into one modular chip stack to create the first integrated circuit for quantum compute. By moving the qubit controls inside of the dilution refrigerator, we’re solving the bottlenecks of incumbent architectures and enabling unprecedented scalability.   📊 Lower Costs, Greater Impact Our quantum integrated circuit means that the cost of scaling will be lithographically defined. With this approach, we’re not just building quantum computers—we’re enabling real-world adoption into HPC data centers and unlocking quantum's transformative potential across AI, cryptography, optimization, and simulation.   🚀 Starting Moore’s Law for Quantum Compute Without the breakthrough innovations described above, quantum computing will remain a niche technology. By addressing these challenges together, we can start a new Moore’s Law for the exponential growth of quantum computational power. Led by CEO & Co-Founder Bharath Kannan, we are taking a first principles approach to develop quantum processors that simultaneously achieve record-low errors, are purpose-built to scale, and are cost-effective enough to deliver economic value. Visit us: www.atlantic-quantum.com   Huge thank you to the Upstatement team for their collaboration, insights, design, and photography, especially Scott Dasse, Jim S., and Violet Pettie. Many thanks also to our lead investor Engine Ventures (Reed Sturtevant, Madeleine Laitz, PhD) for their counsel and support. Special shout out to Katherine Otway Londergan and Connor Blake for their contributions.   #MIT #QuantumComputing #Quantum #DefenseTech #DualUse

🏆 We are thrilled to announce that our fluxonium qubits have achieved >99.997% single-qubit gate fidelities – a new world record!   This milestone, published in PRX Quantum and co-authored by David Rower, Leon Ding, Prof. William D. Oliver et al., was achieved at the Massachusetts Institute of Technology using two complementary protocols: 1) Circularly polarized driving with simultaneous charge and flux control, and 2) Commensurate pulses that regularize error contributions, requiring no additional calibration overhead.   💬 David Rower, #MIT PhD’24 and now Google Quantum AI researcher, reflected: “This project makes it clear that counter-rotating errors can be dealt with easily. This is a wonderful thing for low-frequency qubits such as fluxonium, which are looking more and more promising for quantum computing.”   💬 Leon Ding, Atlantic Quantum Co-Founder & Head of Calibration, noted: “Here, we’ve demonstrated a gate that is among the fastest and highest-fidelity across all superconducting qubits. Our experiments really show that fluxonium is a qubit that supports both interesting physical explorations and also absolutely delivers in terms of engineering performance.”   💬 Will Oliver, Atlantic Quantum Co-Founder & Senior Advisor, remarked: “With the recent announcement of Google’s Willow quantum chip that demonstrated quantum error correction beyond threshold for the first time, this is a timely result, as we have pushed performance even higher. Higher-performant qubits will lead to lower overhead requirements for implementing error correction.”   This research is a significant step toward realizing high-fidelity quantum gates essential for utility-scale, fault-tolerant quantum computing.    Read more in the MIT News article: https://lnkd.in/eQFdvw6h Access the full paper here: https://lnkd.in/ezyAB3s5   Congratulations to David, Leon, and the EQuS team for this achievement! 👏    #QuantumComputing #Quantum #Innovation

🏆 We are thrilled to announce that our fluxonium qubits have achieved >99.997% single-qubit gate fidelities – a new world record!   This milestone, published in PRX Quantum and co-authored by David Rower, Leon Ding, Prof. William D. Oliver et al., was achieved at the Massachusetts Institute of Technology using two complementary protocols: 1) Circularly polarized driving with simultaneous charge and flux control, and 2) Commensurate pulses that regularize error contributions, requiring no additional calibration overhead.   💬 David Rower, #MIT PhD’24 and now Google Quantum AI researcher, reflected: “This project makes it clear that counter-rotating errors can be dealt with easily. This is a wonderful thing for low-frequency qubits such as fluxonium, which are looking more and more promising for quantum computing.”   💬 Leon Ding, Atlantic Quantum Co-Founder & Head of Calibration, noted: “Here, we’ve demonstrated a gate that is among the fastest and highest-fidelity across all superconducting qubits. Our experiments really show that fluxonium is a qubit that supports both interesting physical explorations and also absolutely delivers in terms of engineering performance.”   💬 Will Oliver, Atlantic Quantum Co-Founder & Senior Advisor, remarked: “With the recent announcement of Google’s Willow quantum chip that demonstrated quantum error correction beyond threshold for the first time, this is a timely result, as we have pushed performance even higher. Higher-performant qubits will lead to lower overhead requirements for implementing error correction.”   This research is a significant step toward realizing high-fidelity quantum gates essential for utility-scale, fault-tolerant quantum computing.    Read more in the MIT News article: https://lnkd.in/eQFdvw6h Access the full paper here: https://lnkd.in/ezyAB3s5   Congratulations to David, Leon, and the EQuS team for this achievement! 👏    #QuantumComputing #Quantum #Innovation

🤝 SCALINQ has been a valued collaborator since Atlantic Quantum's early days, with their LINQER packaging solution playing a key role in our quantum processor demonstrations. Partnerships like these drive meaningful progress in quantum computing and inspire continued innovation across the industry. We look forward to building on this collaboration and achieving new breakthroughs together in the year ahead! Photo credit: Streeter Phillips (Engine Ventures)