Esha

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Esha

Esha

@eshaswaroop

PhD student in quantum error-correction and quantum info @Perimeter @QuantumIQC, Waterloo

Waterloo, ON Katılım Aralık 2018
834 Takip Edilen431 Takipçiler
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Esha
Esha@eshaswaroop·
Here are the slides from our @QIP2025 talk on Logical gates on quantum LDPC codes by surgery / Universal Adapters. doi.org/10.5281/zenodo… Some visuals to complement work on quantum LDPC gates in 3 papers. @IBMResearch In case the talk went by too fast :)
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PRX Quantum
PRX Quantum@PRX_Quantum·
A universal, low-overhead adapter enables sparse, fault-tolerant joint logical measurements and gates across arbitrary quantum LDPC codes, with qubit and check costs scaling only linearly (up to polylog factors) in code distance. @eshaswaroop @quantom_info go.aps.org/3LRHtal
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Esha
Esha@eshaswaroop·
LDPC Logic gates started looking a lot more concrete📐⚖️ -- explicit constructions with realistic overheads for near but interesting codes we know (BB, lifted product codes,..) coming soon!
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John Preskill
John Preskill@preskill·
When and how will quantum computing broadly benefit humanity? Despite exhilarating recent progress, we still don’t know. Here my friend Jens Eisert and I assess the current status and the challenges ahead. We are optimistic about the quantum future, but there’s a lot of work to do. arxiv.org/abs/2510.19928
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Jay Gambetta
Jay Gambetta@jaygambetta·
We're confident our modular approach to FTQC is the most practical and will succeed quickly and spectacularly, so we're happy to take on DARPA's challenge in QBI and prove our approach to fault-tolerant quantum computing to the world. darpa.mil/news/2025/comp…
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Esha
Esha@eshaswaroop·
Here are the slides from our @QIP2025 talk on Logical gates on quantum LDPC codes by surgery / Universal Adapters. doi.org/10.5281/zenodo… Some visuals to complement work on quantum LDPC gates in 3 papers. @IBMResearch In case the talk went by too fast :)
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QIP 2025
QIP 2025@QIP2025·
On Monday afternoon, we had the first sets of parallel talks from the full range of areas covered by QIP, including but not limited to error correction, algorithms, and cryptography! From left to right: Eesha Swaroop, Bobak Kiani, Luowen Qian #EeshaSwaroop #BobakKiani #LouwenQian
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Nikolas Breuckmann
Nikolas Breuckmann@nikobreu·
This is the first paper together with my grad student Ryan who worked very hard on this. Also check out this recent related work offering a complementary approach to gates in qLDPC codes x.com/eshaswaroop/st… 5/5
Esha@eshaswaroop

I'm excited to share our work "Universal adapters for quantum LDPC codes" scirate.com/arxiv/2410.036… As new code families are discovered, the next question has been- how do we compute on them? We provide a concrete way to enable measurements or mediate with any other LDPC code 1/n

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Nikolas Breuckmann
Nikolas Breuckmann@nikobreu·
qLDPC codes offer efficient storage of quantum information. It is less clear how to use them for fault-tolerant quantum computing in a resource efficient way. In scirate.com/arxiv/2411.033… we show how to obtain logical entangling gates without the use of any additional qubits. 1/5
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Timo Hillmann
Timo Hillmann@timohillmann·
@eshaswaroop @mike_vasmer anything that has meta-checks that scale with the code, really. The four-fold HGP based on the [25s^2, s^2] family of arxiv.org/abs/2109.14609 should do for sure. One could also construct explicit meta-checks for the code obtained from the standard HGP and check for that property.
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Esha
Esha@eshaswaroop·
@CraigGidney Does "cheap" refer to space overhead? What does the overhead in spacetime and the post-selection rate look like?
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Craig Gidney
Craig Gidney@CraigGidney·
Over the past decade the expected cost of a T gate has gone from 1000 CNOTs to 2 CNOTs. And the CNOTs also got smaller. We got used to T gates being dominant. We estimated costs just by counting Ts. That time's over. The dominant costs are probably storage and routing now.
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Craig Gidney
Craig Gidney@CraigGidney·
Been working on "Magic state cultivation: growing T states as cheap as CNOT gates" all year. It's finally out: arxiv.org/abs/2409.17595 The reign of the T gate is coming to an end. It's now nearly the cost of a lattice surgery CNOT gate, and I bet there's more improvements yet.
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Esha
Esha@eshaswaroop·
@B1ar2n3a @letonyo I’d still hesitate to say that because of the coauthors. Not a lot of middle schoolers are connected to university profs.
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Barna Saha
Barna Saha@B1ar2n3a·
SODA 2025 has a paper by a middle schooler! Maybe first in its history. Gains-from-Trade in Bilateral Trade with a Broker Suho Shin, Gary Peng (University of Maryland); Ilya Hajiaghayi (Takoma Park Middle School); Mohammad Taghi Hajiaghayi (University of Maryland)
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Barna Saha
Barna Saha@B1ar2n3a·
Some trivia about SODA 2025. SODA 2025 accepted 192 papers out of 655 submissions. It could have accepted 292 papers without compromising on the quality but could not do so due to strict restrictions on the number of talk slots. Accepted Paper list: siam.org/conferences-ev…
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Esha
Esha@eshaswaroop·
Think I forgot to specify, the adapter is "universal" in the sense that it can be applied to any quantum LDPC code, and also to any logical qubit within multi-qubit LDPC codeblocks.
Esha@eshaswaroop

I'm excited to share our work "Universal adapters for quantum LDPC codes" scirate.com/arxiv/2410.036… As new code families are discovered, the next question has been- how do we compute on them? We provide a concrete way to enable measurements or mediate with any other LDPC code 1/n

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Esha
Esha@eshaswaroop·
These are explicit examples of how our adapters can also be a tool for mediating between codes with large rate for space-efficient memory & those with additional symmetries enabling fault-tolerant logical gates, relevant in current regime. joint work w Ted & @quantom_info :) n/n
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Esha
Esha@eshaswaroop·
As a special case, the overhead for joint measurements can be reduced from O(dlog^2(d)) to O(d) in the case of some topological codes 9/10
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Esha
Esha@eshaswaroop·
I'm excited to share our work "Universal adapters for quantum LDPC codes" scirate.com/arxiv/2410.036… As new code families are discovered, the next question has been- how do we compute on them? We provide a concrete way to enable measurements or mediate with any other LDPC code 1/n
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Keşfet

@quantom_info @QIP2025 @IBMResearch @DulwichQuantum @timohillmann @theeczoo @hyharryzhou @SimonsInstitute