Python Result.col_which方法代码示例

# 需要导入模块: from qutip.solver import Result [as 别名]
# 或者: from qutip.solver.Result import col_which [as 别名]

#.........这里部分代码省略.........
        ntraj = options.ntraj

    if psi0.type != 'ket':
        raise Exception("Initial state must be a state vector.")
    config.options = options
    # set num_cpus to the value given in qutip.settings
    # if none in Options
    if not config.options.num_cpus:
        config.options.num_cpus = qutip.settings.num_cpus
    # set initial value data
    if options.tidy:
        config.psi0 = psi0.tidyup(options.atol).full()
    else:
        config.psi0 = psi0.full()
    config.psi0_dims = psi0.dims
    config.psi0_shape = psi0.shape
    # set general items
    config.tlist = tlist
    if isinstance(ntraj, (list, np.ndarray)):
        raise Exception("ntraj as list argument is not supported.")
    else:
        config.ntraj = ntraj
        # ntraj_list = [ntraj]
    # set norm finding constants
    config.norm_tol = options.norm_tol
    config.norm_steps = options.norm_steps

    if not options.rhs_reuse:
        config.soft_reset()
        # no time dependence
        config.tflag = 0
        # check for collapse operators
        if len(c_ops) > 0:
            config.cflag = 1
        else:
            config.cflag = 0
        # Configure data
        _mc_data_config(H, psi0, [], c_ops, [], [], e_ops, options, config)

    # Load Monte Carlo class
    mc = _MC_class()
    # Set solver type
    if (options.method == 'adams'):
        mc.mf = 10
    elif (options.method == 'bdf'):
        mc.mf = 22
    else:
        if debug:
            print('Unrecognized method for ode solver, using "adams".')
        mc.mf = 10
    # store ket and density matrix dims and shape for convenience
    mc.psi0_dims = psi0.dims
    mc.psi0_shape = psi0.shape
    mc.dm_dims = (psi0 * psi0.dag()).dims
    mc.dm_shape = (psi0 * psi0.dag()).shape
    # use sparse density matrices during computation?
    mc.sparse_dms = sparse_dms
    # run in serial?
    mc.serial_run = serial or (ntraj == 1)
    # are we doing a partial trace for returned states?
    mc.ptrace_sel = ptrace_sel
    if (ptrace_sel != []):
        if debug:
            print("ptrace_sel set to " + str(ptrace_sel))
            print("We are using dense density matrices during computation " +
                  "when performing partial trace. Setting sparse_dms = False")
            print("This feature is experimental.")
        mc.sparse_dms = False
        mc.dm_dims = psi0.ptrace(ptrace_sel).dims
        mc.dm_shape = psi0.ptrace(ptrace_sel).shape
    if (calc_entropy):
        if (ptrace_sel == []):
            if debug:
                print("calc_entropy = True, but ptrace_sel = []. Please set " +
                      "a list of components to keep when calculating average" +
                      " entropy of reduced density matrix in ptrace_sel. " +
                      "Setting calc_entropy = False.")
            calc_entropy = False
        mc.calc_entropy = calc_entropy

    # construct output Result object
    output = Result()

    # Run
    mc.run()
    output.states = mc.sol.states
    output.expect = mc.sol.expect
    output.col_times = mc.sol.col_times
    output.col_which = mc.sol.col_which
    if (hasattr(mc.sol, 'entropy')):
        output.entropy = mc.sol.entropy

    output.solver = 'Fortran 90 Monte Carlo solver'
    # simulation parameters
    output.times = config.tlist
    output.num_expect = config.e_num
    output.num_collapse = config.c_num
    output.ntraj = config.ntraj

    return output

# 需要导入模块: from qutip.solver import Result [as 别名]
# 或者: from qutip.solver.Result import col_which [as 别名]

#.........这里部分代码省略.........

        # check for type of time-dependence (if any)
        time_type, h_stuff, c_stuff = _td_format_check(H, c_ops, 'mc')
        c_terms = len(c_stuff[0]) + len(c_stuff[1]) + len(c_stuff[2])
        # set time_type for use in multiprocessing
        config.tflag = time_type

        # check for collapse operators
        if c_terms > 0:
            config.cflag = 1
        else:
            config.cflag = 0

        # Configure data
        _mc_data_config(H, psi0, h_stuff, c_ops, c_stuff, args, e_ops,
                        options, config)

        # compile and load cython functions if necessary
        _mc_func_load(config)

    else:
        # setup args for new parameters when rhs_reuse=True and tdfunc is given
        # string based
        if config.tflag in [1, 10, 11]:
            if any(args):
                config.c_args = []
                arg_items = list(args.items())
                for k in range(len(arg_items)):
                    config.c_args.append(arg_items[k][1])
        # function based
        elif config.tflag in [2, 3, 20, 22]:
            config.h_func_args = args

    # load monte carlo class
    mc = _MC(config)

    # Run the simulation
    mc.run()

    # Remove RHS cython file if necessary
    if not options.rhs_reuse and config.tdname:
        _cython_build_cleanup(config.tdname)

    # AFTER MCSOLVER IS DONE
    # ----------------------

    # Store results in the Result object
    output = Result()
    output.solver = 'mcsolve'
    output.seeds = config.options.seeds
    # state vectors
    if (mc.psi_out is not None and config.options.average_states
            and config.cflag and ntraj != 1):
        output.states = parfor(_mc_dm_avg, mc.psi_out.T)
    elif mc.psi_out is not None:
        output.states = mc.psi_out

    # expectation values
    if (mc.expect_out is not None and config.cflag
            and config.options.average_expect):
        # averaging if multiple trajectories
        if isinstance(ntraj, int):
            output.expect = [np.mean(np.array([mc.expect_out[nt][op]
                                               for nt in range(ntraj)],
                                              dtype=object),
                                     axis=0)
                             for op in range(config.e_num)]
        elif isinstance(ntraj, (list, np.ndarray)):
            output.expect = []
            for num in ntraj:
                expt_data = np.mean(mc.expect_out[:num], axis=0)
                data_list = []
                if any([not op.isherm for op in e_ops]):
                    for k in range(len(e_ops)):
                        if e_ops[k].isherm:
                            data_list.append(np.real(expt_data[k]))
                        else:
                            data_list.append(expt_data[k])
                else:
                    data_list = [data for data in expt_data]
                output.expect.append(data_list)
    else:
        # no averaging for single trajectory or if average_expect flag
        # (Options) is off
        if mc.expect_out is not None:
            output.expect = mc.expect_out

    # simulation parameters
    output.times = config.tlist
    output.num_expect = config.e_num
    output.num_collapse = config.c_num
    output.ntraj = config.ntraj
    output.col_times = mc.collapse_times_out
    output.col_which = mc.which_op_out

    if e_ops_dict:
        output.expect = {e: output.expect[n]
                         for n, e in enumerate(e_ops_dict.keys())}

    return output

# 需要导入模块: from qutip.solver import Result [as 别名]
# 或者: from qutip.solver.Result import col_which [as 别名]
def _gather(sols):
    # gather list of Result objects, sols, into one.
    sol = Result()
    # sol = sols[0]
    ntraj = sum([a.ntraj for a in sols])
    sol.col_times = np.zeros((ntraj), dtype=np.ndarray)
    sol.col_which = np.zeros((ntraj), dtype=np.ndarray)
    sol.col_times[0:sols[0].ntraj] = sols[0].col_times
    sol.col_which[0:sols[0].ntraj] = sols[0].col_which
    sol.states = np.array(sols[0].states)
    sol.expect = np.array(sols[0].expect)
    if (hasattr(sols[0], 'entropy')):
        sol.entropy = np.array(sols[0].entropy)
    sofar = 0
    for j in range(1, len(sols)):
        sofar = sofar + sols[j - 1].ntraj
        sol.col_times[sofar:sofar + sols[j].ntraj] = (
            sols[j].col_times)
        sol.col_which[sofar:sofar + sols[j].ntraj] = (
            sols[j].col_which)
        if (config.e_num == 0):
            if (config.options.average_states):
                # collect states, averaged over trajectories
                sol.states += np.array(sols[j].states)
            else:
                # collect states, all trajectories
                sol.states = np.vstack((sol.states,
                                        np.array(sols[j].states)))
        else:
            if (config.options.average_expect):
                # collect expectation values, averaged
                for i in range(config.e_num):
                    sol.expect[i] += np.array(sols[j].expect[i])
            else:
                # collect expectation values, all trajectories
                sol.expect = np.vstack((sol.expect,
                                        np.array(sols[j].expect)))
        if (hasattr(sols[j], 'entropy')):
            if (config.options.average_states or
                    config.options.average_expect):
                # collect entropy values, averaged
                sol.entropy += np.array(sols[j].entropy)
            else:
                # collect entropy values, all trajectories
                sol.entropy = np.vstack((sol.entropy,
                                         np.array(sols[j].entropy)))
    if (config.options.average_states or config.options.average_expect):
        if (config.e_num == 0):
            sol.states = sol.states / len(sols)
        else:
            sol.expect = list(sol.expect / len(sols))
            inds = np.where(config.e_ops_isherm)[0]
            for jj in inds:
                sol.expect[jj] = np.real(sol.expect[jj])
        if (hasattr(sols[0], 'entropy')):
            sol.entropy = sol.entropy / len(sols)

    # convert sol.expect array to list and fix dtypes of arrays
    if (not config.options.average_expect) and config.e_num != 0:
        temp = [list(sol.expect[ii]) for ii in range(ntraj)]
        for ii in range(ntraj):
            for jj in np.where(config.e_ops_isherm)[0]:
                temp[ii][jj] = np.real(temp[ii][jj])
        sol.expect = temp
    # convert to list/array to be consistent with qutip mcsolve
    sol.states = list(sol.states)
    return sol

# 需要导入模块: from qutip.solver import Result [as 别名]
# 或者: from qutip.solver.Result import col_which [as 别名]

#.........这里部分代码省略.........
    H, c_ops, args = _td_wrap_array_str(H, c_ops, args, tlist)

    # ----------------------------------------------
    # SETUP ODE DATA IF NONE EXISTS OR NOT REUSING
    # ----------------------------------------------
    if (not options.rhs_reuse) or (not config.tdfunc):
        # reset config collapse and time-dependence flags to default values
        config.soft_reset()

        # check for type of time-dependence (if any)
        time_type, h_stuff, c_stuff = _td_format_check(H, c_ops, "mc")
        h_terms = len(h_stuff[0]) + len(h_stuff[1]) + len(h_stuff[2])
        c_terms = len(c_stuff[0]) + len(c_stuff[1]) + len(c_stuff[2])
        # set time_type for use in multiprocessing
        config.tflag = time_type

        # check for collapse operators
        if c_terms > 0:
            config.cflag = 1
        else:
            config.cflag = 0

        # Configure data
        _mc_data_config(H, psi0, h_stuff, c_ops, c_stuff, args, e_ops, options, config)

        # compile and load cython functions if necessary
        _mc_func_load(config)

    else:
        # setup args for new parameters when rhs_reuse=True and tdfunc is given
        # string based
        if config.tflag in array([1, 10, 11]):
            if any(args):
                config.c_args = []
                arg_items = args.items()
                for k in range(len(args)):
                    config.c_args.append(arg_items[k][1])
        # function based
        elif config.tflag in array([2, 3, 20, 22]):
            config.h_func_args = args

    # load monte-carlo class
    mc = _MC_class(config)

    # RUN THE SIMULATION
    mc.run()

    # remove RHS cython file if necessary
    if not options.rhs_reuse and config.tdname:
        try:
            os.remove(config.tdname + ".pyx")
        except:
            pass

    # AFTER MCSOLVER IS DONE --------------------------------------
    # ------- COLLECT AND RETURN OUTPUT DATA IN ODEDATA OBJECT --------------
    output = Result()
    output.solver = "mcsolve"
    # state vectors
    if mc.psi_out is not None and config.options.average_states and config.cflag and ntraj != 1:
        output.states = parfor(_mc_dm_avg, mc.psi_out.T)
    elif mc.psi_out is not None:
        output.states = mc.psi_out
    # expectation values
    elif mc.expect_out is not None and config.cflag and config.options.average_expect:
        # averaging if multiple trajectories
        if isinstance(ntraj, int):
            output.expect = [mean([mc.expect_out[nt][op] for nt in range(ntraj)], axis=0) for op in range(config.e_num)]
        elif isinstance(ntraj, (list, ndarray)):
            output.expect = []
            for num in ntraj:
                expt_data = mean(mc.expect_out[:num], axis=0)
                data_list = []
                if any([not op.isherm for op in e_ops]):
                    for k in range(len(e_ops)):
                        if e_ops[k].isherm:
                            data_list.append(np.real(expt_data[k]))
                        else:
                            data_list.append(expt_data[k])
                else:
                    data_list = [data for data in expt_data]
                output.expect.append(data_list)
    else:
        # no averaging for single trajectory or if average_states flag
        # (Options) is off
        if mc.expect_out is not None:
            output.expect = mc.expect_out

    # simulation parameters
    output.times = config.tlist
    output.num_expect = config.e_num
    output.num_collapse = config.c_num
    output.ntraj = config.ntraj
    output.col_times = mc.collapse_times_out
    output.col_which = mc.which_op_out

    if e_ops_dict:
        output.expect = {e: output.expect[n] for n, e in enumerate(e_ops_dict.keys())}

    return output