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No invariant perfect qubit codes
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DOI：10.1007/JHEP02(2023)062.png)
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摘要
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Perfect tensors describe highly entangled quantum states that have attracted particular attention in the fields of quantum information theory and quantum gravity. In loop quantum gravity, the natural question arises whether SU(2) invariant tensors, which are fundamental ingredients of the basis states of spacetime, can also be perfect. In this work, we present a number of general constraints for the layout of such invariant perfect tensors (IPTs) and further describe a systematic and constructive approach to check the existence of an IPT of given valence. We apply our algorithm to show that no qubit encoding of valence 6 can be described by an IPT and close a gap to prove a no-go theorem for invariant perfect qubit encodings. We also provide two alternative proofs for the non-existence of 4-valent qubit IPTs which has been shown in [1, 2].
Keyword:
Holography and Condensed Matter Physics (AdS
CMT)
Gauge-Gravity Correspondence
Models of Quantum Gravity
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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