Alp Sipahigil
@alpsipahigil.bsky.social
Quantum engineer leading the Quantum Devices Group at UC Berkeley and Berkeley Lab.
quantumdevices.berkeley.edu
quantumdevices.berkeley.edu
Very nice work from AWS:
arxiv.org/abs/2506.08130
Surprised why this approach hasn't become the norm in superconducting resonator characterization looong time ago! We focus too much on "single-photon level" resonator measurements. While what matters is the saturation electric field for TLSs.
arxiv.org/abs/2506.08130
Surprised why this approach hasn't become the norm in superconducting resonator characterization looong time ago! We focus too much on "single-photon level" resonator measurements. While what matters is the saturation electric field for TLSs.
Broadband and high-precision two-level system loss measurement using superconducting multi-wave resonators
Two-level systems (TLS) are known to be a dominant source of dissipation and decoherence in superconducting qubits. Superconducting resonators provide a convenient way to study TLS-induced loss due to...
arxiv.org
June 11, 2025 at 2:26 AM
Very nice work from AWS:
arxiv.org/abs/2506.08130
Surprised why this approach hasn't become the norm in superconducting resonator characterization looong time ago! We focus too much on "single-photon level" resonator measurements. While what matters is the saturation electric field for TLSs.
arxiv.org/abs/2506.08130
Surprised why this approach hasn't become the norm in superconducting resonator characterization looong time ago! We focus too much on "single-photon level" resonator measurements. While what matters is the saturation electric field for TLSs.
February 20, 2025 at 5:56 AM
We demonstrate multiplexed single-photon generation from T centers in a silicon photonic cavity array, and probe waveguide-mediated long-range interactions using a single emitter.
arxiv.org/abs/2501.17339
Congrats to the entire team! Comments welcomed.
arxiv.org/abs/2501.17339
Congrats to the entire team! Comments welcomed.
Multiplexed color centers in a silicon photonic cavity array
Entanglement distribution is central to the modular scaling of quantum processors and establishing quantum networks. Color centers with telecom-band transitions and long spin coherence times are suita...
arxiv.org
January 30, 2025 at 4:57 PM
We demonstrate multiplexed single-photon generation from T centers in a silicon photonic cavity array, and probe waveguide-mediated long-range interactions using a single emitter.
arxiv.org/abs/2501.17339
Congrats to the entire team! Comments welcomed.
arxiv.org/abs/2501.17339
Congrats to the entire team! Comments welcomed.
New group paper!
We show that embedding a superconducting qubit in a phononic bandgap metamaterial modifies TLS dissipation to a non-Markovian regime.
www.nature.com/articles/s41...
We show that embedding a superconducting qubit in a phononic bandgap metamaterial modifies TLS dissipation to a non-Markovian regime.
www.nature.com/articles/s41...
Non-Markovian dynamics of a superconducting qubit in a phononic bandgap - Nature Physics
Defects known as two-level systems are a major source of noise for superconducting qubits. Adding a phononic crystal is now shown to extend the lifetime of these two-level systems, which could lead to...
www.nature.com
January 7, 2025 at 10:47 PM
New group paper!
We show that embedding a superconducting qubit in a phononic bandgap metamaterial modifies TLS dissipation to a non-Markovian regime.
www.nature.com/articles/s41...
We show that embedding a superconducting qubit in a phononic bandgap metamaterial modifies TLS dissipation to a non-Markovian regime.
www.nature.com/articles/s41...
IC postdoc fellowship opportunity on defect engineering for superconducting qubits:
www.zintellect.com/Opportunity/...
www.zintellect.com/Opportunity/...
December 21, 2024 at 12:39 AM
IC postdoc fellowship opportunity on defect engineering for superconducting qubits:
www.zintellect.com/Opportunity/...
www.zintellect.com/Opportunity/...
Reposted by Alp Sipahigil
🧪Constrained optimization tiling of the Cal bears logo, using simulated differential phase-contrast imaging of strontium titanate atoms.
🔬 Captured for @molecularfoundry.bsky.social #Nano Art Contest.
📷 Georgios Varnavides, @ucberkeleyofficial.bsky.social
More: foundry.lbl.gov/2024/10/21/a...
🔬 Captured for @molecularfoundry.bsky.social #Nano Art Contest.
📷 Georgios Varnavides, @ucberkeleyofficial.bsky.social
More: foundry.lbl.gov/2024/10/21/a...
November 26, 2024 at 11:00 PM
🧪Constrained optimization tiling of the Cal bears logo, using simulated differential phase-contrast imaging of strontium titanate atoms.
🔬 Captured for @molecularfoundry.bsky.social #Nano Art Contest.
📷 Georgios Varnavides, @ucberkeleyofficial.bsky.social
More: foundry.lbl.gov/2024/10/21/a...
🔬 Captured for @molecularfoundry.bsky.social #Nano Art Contest.
📷 Georgios Varnavides, @ucberkeleyofficial.bsky.social
More: foundry.lbl.gov/2024/10/21/a...