Ben Quinn

@DrHughJaction This is not a square-counting brain teaser. You have 10 identical squares (green) and the goal is to pack them into the smallest sized square domain (of any size), which is the "11th square" from the counting perspective.

Optimal packing of 10 squares into a square. "Hmmm that's kind of unexpected."

i.e. God of the gaps

Correction: this is the densest known for 11 squares in a square. It may not be optimal -- open question.

@Ithilia_V And those from Vienna (in German)?

Best (worst?) bad joke around the table today: “How do you address the citizens of Hamberg?" #ANZCOPAIP2023

@QuantumMemeing @JoshKoomz @QuantumChubb *Laughs in tensor network*

@QuantumChubb I've had it independently confirmed that @QuantumChubb is actually the peak performance error correction theorist

looking increasingly like most jobs in quantum industry atm are (a) error correction theory, (b) software engineer for quantum control to implement error correction, (c) fabrication of some sort maybe I'm missing something?

@BrianScipioni @solidangles @math_vet How does this work for the real exponentials in the Laplace transform specifically? Fourier transform is more straightforward because plane waves form an orthonormal basis.

Can someone please explain or recommend a resource that explains the intuition behind the Laplace transform? Like, I believe it works and is very useful! But what I'm wondering is how the heck would someone have first thought to construct that particular integral out of nowhere?

@balopat Teleportation error correction (Knill-style) is the best way to fix errors on rotation codes (such as cat codes), because otherwise the recoveries are too complicated. More on that idea in our 2020 paper on quantum computing with rotation codes.

Four legged cats get universal, low error rate gadgets. It seems that this makes them ready to be qubits for a surface code layer. Looks pretty cool. Love the teleportation gadget idea that pumps energy back into the system.

the last talk of day 4 at #qec23 is by Qian Xu from @UChicago on their fresh out on ArXiv preprint (arxiv.org/abs/2310.20578…) on Fault-Tolerant Operation of Bosonic Qubits with Discrete-Variable Ancillae.

One of the best parts is the wood. The metaphor, sending a paleolithic material into space.

The toilet on space station MIR was a work of art

Soyuz: pure utility

Eat at a local restaurant tonight. Get the cream sauce. Have a cold pint at 4 o’clock in a mostly empty bar. Go somewhere you’ve never been. Listen to someone you think may have nothing in common with you. Order the steak rare. Eat an oyster. Have a negroni. Have two.

A special, very personal holiday: The day this year's citations exceeds last year's. It may not even happen this year. But if it does, enjoy.

@MWalschaers @SubhashishB19 @Quantum_137 It's not clear that infinite stellar rank is a necessary condition for fault tolerance. Approximate GKP states with finite (but sufficient) stellar rank should do the trick. The question (I think) we are both asking is: how much stellar rank is enough?

@MWalschaers @SubhashishB19 @Quantum_137 In the sense that a cat state itself is also a low-quality GKP state, this isn't really meaningful wrt quantum computing directly. But it's a huge advance for optical generation of better quality states towards fault tolerance (~10bB GKP states)

@MWalschaers @SubhashishB19 @Quantum_137 The key advance is a demonstration of the breeding protocol producing a state that exhibits 3 peaks in its quadrature distribution and 2 blobs of negativity in the Wigner function. As far as GKP states go, it's a "step up", but it's not high enough quality for fault tolerance.

Quick! Name 5 cities in China and 5 in India

@letonyo @IonQ_Inc @PsiQuantum @XanaduAI ;)

So the last few days have shown qLDPC codes are compatible with superconducting qubits and Rydberg atoms. What about ions and photons? Looking at you @IonQ_Inc @PsiQuantum @XanaduAI arxiv.org/abs/2308.08648 arxiv.org/abs/2308.07915

@caboolture @kD3AN Australia has its own Texas