What is the advantage of syndrome-aware quantum computation?
Answer depends on usage of syndrome:
1. Only for postprocessing. LER improves only up to half
2. Also for measurements. Then LER can improve exponentially
Congrats Kento for fantastic work!
https://t.co/2FRFSBkaWQ
Our work on Heisenberg-limited multiple observables estimation has been published in PRL.
Utilizing the U(1) symmetry, we show that query complexity shows quartic improvement compared to the ordinary Grover-like techniques.
Congrats Yuki!
https://t.co/gObVVPM1Aq
In new work with Haipeng and Ying Li, we propose "Argument Reweighting" to detect untrustworthy decoding results.
Surprisingly, we find two-orders of magnitude improvement in LER by only discarding fraction of 10^{-5} in [[144, 12, 12]] code.
https://t.co/X2ezHJDSLw
Work appeared in PRL, on global quantum randomness generation from non-Haar local randomness.
Imperfection of local randomness only puts a size-independent overhead on circuit depth, implying its robustness.
Congrats Toshihiro, Ryotaro, and Yosuke!
https://t.co/JP1avnlyPR
We released the v2.0.0 of pygridsynth, with pip installation enabled.
New features include
- Multiqubit synthesis
- Mixed synthesis with diamond norm minimization
https://t.co/1ZL2JcgPIm
GSCAEP-UTokyo collaboration on unbiased error mitigation for * logical * qubits has been published in PRL.
The protocol shown to be robust under both spacially or temporally correlated noise.
Congrats Haipeng, Ying, and Kento for wonderful work!
https://t.co/biB2GYTG3H
Our work on symmetric channel purification is published in PRX Quantum.
We proposed a method to detect/correct symmetry-breaking errors in a channel, regardless of input state. This is a novel form of spacetime error detection/correction.
Congrats Kento!
https://t.co/vlcgcUdk1A
We propose a notion of weak transversal gates, which reduce the runtime of Trotter like circuit in surface and qLDPC codes by factor of tens to a hundred in megaquop (in Clifford+T gateset) regime. Thanks Alireza, Andrew, and Ali for collaboration!
https://t.co/aATbvfu4WE