Brian SiegelwaxThe Quantum Dragon isn't the newsletter you need right now, but it's the newsletter you deserve.
https://bsiegelwax.substack.com/p/the-alpha-cat-of-the-clowder
The Grand Staircase inside Hogwarts Castle is magically whimsical, unpredictably opening up new routes while simultaneously closing others. How could this possibly be analogous to a quantum computer architecture?
https://bsiegelwax.substack.com/p/the-grand-staircase-of-quantum-computing
#QuantumComputing #IonTraps #OpticalTweezers #QuantumHardware #MillionQubitSystems
It's fairly common for startups to hire new CEOs as they grow. The Quantum Dragon doesn't cover "common," though, so what's so special about this hire?
https://bsiegelwax.substack.com/p/a-real-world-game-of-global-domination
#QuantumComputing #DelftCircuits #TechLeadership #GlobalExpansion #QuantumHardware
The stage is set. Q-CTRL, Qruise, and QuantrolOx face off in The Great "Bring-Up" Debate... and it's coming to you right now.
https://bsiegelwax.substack.com/p/the-great-bring-up-debate
#quantumcomputing #QPUcalibration #quantumhardware #controlsystems
The Quantum Dragon isn't the newsletter you need right now, but it's the newsletter you deserve.
https://bsiegelwax.substack.com/p/the-least-qualified-dragon-in-quantum
#QuantumComputing #PostQuantumCryptography #QuantumHardware #NISQDevices #QuantumSoftware
If you’ve ever endured a long-haul journey with multiple connecting flights, you know that a direct flight reduces your total travel time (execution time) and decreases your risk of lost baggage (errors). For your consideration: the direct flight analogues of multi-qubit gates.
https://bsiegelwax.substack.com/p/direct-flights-are-better
#QuantumComputing #QuantumTech #QuantumHardware #IonTrap #MultiQubitGates #QuantumCompiler #NVIDIA #CUDAQ
The Quantum Dragon isn't the newsletter you need right now, but it's the newsletter you deserve.
https://bsiegelwax.substack.com/p/dont-miss-this-conference
#quantumcomputing #quantumtechnologies #quantumhardware #quantumsoftware #quantumresearch #innovation #conferences #quantumart #iqtkorea #entangledhealth
The Quantum Dragon isn't the newsletter you need right now, but it's the newsletter you deserve.
https://bsiegelwax.substack.com/p/quantum-met-ai-and-ai-met-quantum
#QuantumComputing #QuantumTechnology #QuantumResearch #QuantumHardware #QuantumSoftware #QuantumIndustry #QuantumCommunity #OpenScience #STEM #Innovation
What’s a “cluster”? Oak Ridge National Laboratory has installed the presumably-first on-premises commercial quantum computer cluster, consisting of 3 quantum dragons... I mean computers... from Quantum Brilliance, and that could mean a few different things. So, I asked for clarification.
https://bsiegelwax.substack.com/p/ornls-dragon-cluster
#QuantumComputing #QuantumBrilliance #ORNL #HybridQuantum #DistributedQuantum #QuantumCluster #OnPremQuantum #NVC #QuantumHardware #QuantumAlgorithms #QuantumResearch #FutureOfComputing
Thibaut Jacqmin🚀 Pushing the limits of superinductors with vertically‑stacked Josephson junctions
🔍Check our new designs of high-impedance hyper-inductors. We open a scalable path to high impedance hyperinductors for exotic protected qubits:
https://arxiv.org/abs/2505.02764
📄A related design has been proposed recently in the group of Alexey Ustinov (ArXiv:2503.11437v1).
#Quantum #Superinductor #JosephsonJunctions #Nanofab #QuantumHardware
LKB - CEA - LPENS - Alice & Bob
Hyperinductance based on stacked Josephson junctions
Superinductances are superconducting circuit elements that combine a large inductance with a low parasitic capacitance to ground, resulting in a characteristic impedance exceeding the resistance quantum $R_Q = h/(2e)^2 \simeq 6.45 \mathrm{k}Ω$. In recent years, these components have become key enablers for emerging quantum circuit architectures. However, achieving high characteristic impedance while maintaining scalability and fabrication robustness remains a major challenge. In this work, we present two fabrication techniques for realizing superinductances based on vertically stacked Josephson junctions. Using a multi-angle Manhattan (MAM) process and a zero-angle (ZA) evaporation technique -- in which junction stacks are connected pairwise using airbridges -- we fabricate one-dimensional chains of stacks that act as high-impedance superconducting transmission lines. Two-tone microwave spectroscopy reveals the expected $\sqrt{n}$ scaling of the impedance with the number of junctions per stack. The chain fabricated using the ZA process, with nine junctions per stack, achieves a characteristic impedance of $\sim 16 \mathrm{k}Ω$, a total inductance of $5.9 \mathrm{μH}$, and a maximum frequency-dependent impedance of $50 \mathrm{k}Ω$ at 1.4 GHz. Our results establish junction stacking as a scalable, robust, and flexible platform for next-generation quantum circuits requiring ultra-high impedance environments.