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59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* density.h: Declarations for density.c
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Copyright 2004, 2005 Bjoern Butscher, Hendrik Weimer
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This file is part of libquantum
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libquantum is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3 of the License,
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or (at your option) any later version.
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libquantum is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with libquantum; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA
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*/
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#ifndef __DENSITY_H
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#define __DENSITY_H
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#include "qureg.h"
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#define quantum_density_operation(function, rho, ...) \
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do{ \
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int quantum_int; \
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for(quantum_int=0; quantum_int < rho.num; quantum_int++) \
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function(__VA_ARGS__, &rho.reg[quantum_int]); \
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} while(0)
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struct quantum_density_op_struct
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{
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int num; /* total number of state vectors */
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float *prob; /* probabilities of the state vectors */
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quantum_reg *reg; /* state vectors */
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};
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typedef struct quantum_density_op_struct quantum_density_op;
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extern quantum_density_op quantum_new_density_op(int num, float *prob,
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quantum_reg *reg);
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extern quantum_density_op quantum_qureg2density_op(quantum_reg *reg);
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extern void quantum_reduced_density_op(int pos, quantum_density_op *rho);
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extern quantum_matrix quantum_density_matrix(quantum_density_op *rho);
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extern void quantum_print_density_matrix(quantum_density_op *rho);
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extern void quantum_delete_density_op(quantum_density_op *rho);
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extern float quantum_purity(quantum_density_op *rho);
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#endif
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