Questions tagged [quantum-money]
For questions about money whose security is based on aspects of the No-Cloning Theorem.
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How to calculate the spectral norm of the density operator used in Molina et al. 2012 paper?
In Molina et al (2012)'s article on quantum money, the proof of security of Wiesner's quantum money scheme depends on the fact that the density operator
$$Q = \frac{1}{4}\sum_{k \in \{0, 1, +, -\}}\...
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Has Blockchain made Quantum Money obsolete?
Quantum Money is an old proposal that solves the forgeability problem of traditional banknotes, by leveraging the No-Cloning Theorem.
Recently, blockchains solved the Double-Spending problem ...
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What role do Hecke operators and ideal classes perform in “Quantum Money from Modular Forms?”
Cross-posted on MO
The original ideas from the 70's/80's - that begat the [BB84] quantum key distribution - concerned quantum money that is unforgeable by virtue of the no-cloning theorem. A ...
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Are non-secret-based quantum money mini-schemes susceptable to Jogenfors' "reuse attack?"
Aaronson and Christiano call public-key or private-key quantum mini-schemes $\mathcal M$ secret-based if a mint works by first uniformly generating a secret random classical strings $r$, and then ...
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Do we have to trust the bank in "Quantum Money from Hidden Subspaces?"
What level of trust in the bank is needed in "Quantum Money from Hidden Subspaces" of Aaronson and Christiano?
The bank's mint works by first generating a uniformly random classical secret string $...
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Can a merchant who accepts a knot-based quantum coin mint her own knot-based coin?
Referring to Farhi, Gosset, Hassidim, Lutomirski, and Shor's "Quantum Money from Knots," a mint $\mathcal{M}$ generates a run of coins, including, say, $(s,|\$\rangle)$, using a quantum computer to ...
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Can quantum money be reliably "burned?"
One of the novel features of Bitcoin and other cryptocurrencies is that coins can be irrefutably "burned" or destroyed, by creating a transaction to send the money to a junk burn address.
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Rigorous security proof for Wiesner's quantum money
In his celebrated paper "Conjugate Coding" (written around 1970), Stephen Wiesner proposed a scheme for quantum money that is unconditionally impossible to counterfeit, assuming that the issuing bank ...
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Quantum Bitcoin Subdivision
Background
Recently I was reading the article "Quantum Bitcoin: An Anonymous and Distributed Currency Secured by the No-Cloning Theorem of Quantum Mechanics" which demonstrates how a quantum bitcoin ...
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