qutipの環境設定がうまくいかない

問題点

qutipがうまくインストールされていない（？）
###内容
アナコンダでインストールしたとき

python
1(base) C:\Users(省略)>conda install qutip
2Solving environment: failed
3
4PackagesNotFoundError: The following packages are not available from current channels:
5
6  - qutip
7
8Current channels:
9
10  - https://repo.anaconda.com/pkgs/main/win-64
11  - https://repo.anaconda.com/pkgs/main/noarch
12  - https://repo.anaconda.com/pkgs/free/win-64
13  - https://repo.anaconda.com/pkgs/free/noarch
14  - https://repo.anaconda.com/pkgs/r/win-64
15  - https://repo.anaconda.com/pkgs/r/noarch
16  - https://repo.anaconda.com/pkgs/pro/win-64
17  - https://repo.anaconda.com/pkgs/pro/noarch
18  - https://repo.anaconda.com/pkgs/msys2/win-64
19  - https://repo.anaconda.com/pkgs/msys2/noarch
20
21To search for alternate channels that may provide the conda package you're
22looking for, navigate to
23
24    https://anaconda.org
25
26and use the search bar at the top of the page.

コマンドプロンプトでpip install qutipとした場合

C:\Users\省略>pip install qutip
Collecting qutip
  Using cached https://files.pythonhosted.org/packages/02/fa/c815ed3f060ed96a56843dfdd1b9b68dd4d9924f7e255845c71d9f62d7d1/qutip-4.3.1.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\REISAT~1\AppData\Local\Temp\pip-install-3chkuzhl\qutip\setup.py", line 54, in <module>
        from Cython.Build import cythonize
    ImportError: No module named 'Cython'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\REISAT~1\AppData\Local\Temp\pip-install-3chkuzhl\qutip\

いままでのパッケージはpip　installで一発だったのですが、なぜqutipは上手くいかないのでしょうか。
cythonのダウンロードが必要。。。？
（追記）
上のnavigate to...に従って以下を行った。

(base) C:\Users\省略>conda config --add channels conda-forge

(base) C:\Users\省略>conda install qutip
Solving environment: done

==> WARNING: A newer version of conda exists. <==
  current version: 4.5.8
  latest version: 4.5.11

Please update conda by running

    $ conda update -n base -c defaults conda



## Package Plan ##

  environment location: C:\Users\省略\Dropbox\python

  added / updated specs:
    - qutip


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    libssh2-1.7.0              |           vc14_1         259 KB  conda-forge
    blas-1.0                   |              mkl           6 KB
    scipy-1.0.0                |   py36h1260518_0        13.0 MB
    openssl-1.0.2p             |    hfa6e2cd_1000         5.4 MB  conda-forge
    tk-8.6.8                   |           vc14_0         3.8 MB  conda-forge
    qutip-4.3.1                |   py36hf75dd32_1         3.0 MB  conda-forge
    zlib-1.2.11                |           vc14_0         119 KB  conda-forge
    certifi-2018.8.24          |           py36_0         138 KB  conda-forge
    pycurl-7.43.0              |           py36_1          55 KB
    icu-58.2                   |           vc14_0        21.8 MB  conda-forge
    bzip2-1.0.6                |           vc14_1         144 KB  conda-forge
    libtiff-4.0.9              |           vc14_0         616 KB  conda-forge
    lzo-2.10                   |           vc14_0         154 KB  conda-forge
    sqlite-3.22.0              |           vc14_0         907 KB  conda-forge
    numpy-1.14.2               |   py36h5c71026_0         3.7 MB
    ca-certificates-2018.8.24  |       ha4d7672_0         170 KB  conda-forge
    libxml2-2.9.5              |           vc14_1         3.2 MB  conda-forge
    qt-5.6.2                   |           vc14_1        55.6 MB  conda-forge
    curl-7.49.1                |           vc14_2         305 KB  conda-forge
    jpeg-9b                    |           vc14_2         314 KB  conda-forge
    conda-4.5.11               |           py36_0         654 KB  conda-forge
    yaml-0.1.7                 |           vc14_0         103 KB  conda-forge
    libiconv-1.14              |           vc14_4         670 KB  conda-forge
    libxslt-1.1.32             |           vc14_0         456 KB  conda-forge
    libpng-1.6.34              |           vc14_0         547 KB  conda-forge
    hdf5-1.10.2                |           vc14_0        18.9 MB  conda-forge
    freetype-2.8.1             |           vc14_0         469 KB  conda-forge
    ------------------------------------------------------------
                                           Total:       134.3 MB

The following NEW packages will be INSTALLED: