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quant-ph1997
On the Complexity of Quantum Searching Using Complex Queries
Markus Grassl, Thomas Beth
We discuss the quantum search algorithm using complex queries that has recently been published by Grover (quant-ph/9706005). We recall the algorithm adding some details showing whi…
quant-ph1997
A Note on Non-Additive Quantum Codes
Markus Grassl, Thomas Beth
A method to combine two quantum error-correcting codes is presented. Even when starting with additive codes, the resulting code might be non-additive. Furthermore, the notion of th…