### 物理代写|量子计算代写Quantum computer代考|Getting some statistics – tossing many coins in a row

statistics-lab™ 为您的留学生涯保驾护航 在代写量子计算Quantum computer方面已经树立了自己的口碑, 保证靠谱, 高质且原创的统计Statistics代写服务。我们的专家在代写量子计算Quantum computer代写方面经验极为丰富，各种代写量子计算Quantum computer相关的作业也就用不着说。

• Statistical Inference 统计推断
• Statistical Computing 统计计算
• Advanced Probability Theory 高等概率论
• Advanced Mathematical Statistics 高等数理统计学
• (Generalized) Linear Models 广义线性模型
• Statistical Machine Learning 统计机器学习
• Longitudinal Data Analysis 纵向数据分析
• Foundations of Data Science 数据科学基础

## 物理代写|量子计算代写Quantum computer代考|Getting some statistics – tossing many coins in a row

Alright, so far, we have done a single coin toss at a time, much like you would do in real life.
But the power of quantum computing comes from running your quantum programs many times with the same initial conditions, letting the qubit superpositions play out their quantum mechanical advantages, and summarizing a large number of runs statistically.

With this recipe, we will do 1,000 coin tosses in the blink of an eye and take a look at the results to see how good the coin is. Will this coin be a fair way to start, say, a game of baseball? Let’s see how that works.

The sample code for this recipe can be found here: https://github. com/ PacktPublishing/Quantum-Computing-in-Practice-with-Qiskitand-IBM-Quantum-Experience/blob/master/Chapter04/ch4_r2_coin_ tosses.py.

In this recipe, we will explore and expand on the shots job parameter. This parameter lets you control how many times you run the quantum job cycle – prepare, run, measure. So far, we have prepared our qubits in the $|0\rangle$ state, set the backend to a simulator, and then run one shot, which represents one full cycle.

In the IBM Quantum Experience composer examples, we ran our scores 1,024 times, which is the default. We discovered that the output turned statistical. In this recipe, we will play with a different number of shots to see how the outcomes statistically change.
Generally speaking, you want to increase the number of shots to improve statistical accuracy.

## 物理代写|量子计算代写Quantum computer代考|Implementing an upside-down coin toss

In this recipe, we will tweak our very first quantum program a little bit but still keep it relatively simple. An actual coin can be tossed starting with either heads or tails facing upward. Let’s do another quantum coin toss but with a different starting point, the coin facing tails up. In Dirac notation, we start with our qubit in $|1\rangle$ instead of in $|0\rangle$.
The sample code for this recipe can be found here: https://github. com/ PacktPublishing/Quantum-Computing-in-Practice-with-Qiskit-andIBM-Quantum-Experience/blob/master/Chapter04/ch4_r3_coin_toss_ tails.py.

Just like the previous recipe, this one is almost identical to the first coin toss recipe. Feel free to reuse what you have already created. The only real difference is that we add a new quantum gate, the $\mathbf{X}$ (or NOT) gate.
How to do it…
The following steps are to a large extent identical to the steps from the Quantum coin toss revisited recipe. There are, however, differences depending on the program you are creating, and what Qiskit” components you are using. I will describe these in detail.
Set up your code like the previous example and then add an $\mathrm{X}$ gate to flip the qubit:

1. Import the required Qiskit” classes and methods:
from qiskit import QuantumCircuit, Aer, execute
from qiskit.visualization import plot_histogram
from IPython. core.display import display
Notice how we are not importing the QuantumRegister and
ClassicalRegister methods here like we did before. In this recipe, we will take
a look at a different way of creating your quantum circuit.
2. Create the quantum circuit with 1 qubit and 1 classical bit:
$q c=$ QuantumCircuit $(1,1)$
Here, we are implicitly letting the QuantumCircuit method create the quantum and classical registers in the background; we do not have to explicitly create them. We will refer to these registers by numbers and lists going forward.
3. Add the Hadamard gate, the $\mathrm{X}$ gate, and the measurement gates to the circuit:
qc.x $(0)$ qc.h $(0)$ qc.measure $(0,0)$

## 物理代写|量子计算代写Quantum computer代考|Tossing two coins simultaneously

So far, we have only played with one coin at a time, but there is nothing stopping us from adding more coins. In this recipe, we will add a coin to the simulation, and toss two coins simultaneously. We will do this by adding a second qubit, expanding the number of qubits – two of everything.
The sample code for this recipe can be found here: https://github . com/ PacktPublishing/Quantum-Computing-in-Practice-with-Qiskit-andIBM-Quantum-Experience/blob/master/Chapter04/ch4_r4_two_coin_ toss.py.

Set up your code like the previous example, but with a 2-qubit quantum circuit:

1. Import the classes and methods that we need:
from qiskit import QuantumCircuit, Aer, execute
from qiskit.tools.visualization import plot_histogram
from IPython.core.display import display
2. Set up our quantum circuit with two qubits and two classical bits:
$q c=$ QuantumCircuit $(2,2)$
3. Add the Hadamard gates and the measurement gates to the circuit:
qc $\cdot h([0,1])$
qc. measure $([0,1],[0,1])$
display (qc. draw (‘mpl’))
Note how we are now using lists to reference multiple qubits and multiple bits. For example, we apply the Hadamard gate to qubits 0 and 1 by using $[0,1]$ as input:
Figure $4.14$ – A 2 -qubit quantum coin toss circuit
4. Set the backend to our local simulator:
backend = Aer.get_backend (‘qasm_simulator’)
5. Run the job with one shot:
counts = execute (qc, backend, shots=1). result().
get_counts (qc)
Again, we are using streamlined code as we are only interested in the counts here.

## 物理代写|量子计算代写Quantum computer代考|Implementing an upside-down coin toss

1. 导入所需的 Qiskit” 类和方法：
from qiskit import QuantumCircuit, Aer,
从 qiskit.visualization 执行 import plot_histogram
from IPython。core.display import display
注意我们没有
像以前那样在这里导入 QuantumRegister 和 ClassicalRegister 方法。在这个秘籍中，我们将
看看创建量子电路的另一种方法。
2. 创建具有 1 个量子位和 1 个经典位的量子电路：
qC=量子电路(1,1)
在这里，我们隐含地让 QuantumCircuit 方法在后台创建量子寄存器和经典寄存器；我们不必显式地创建它们。我们将通过数字和列表来引用这些寄存器。
3. 添加 Hadamard 门，X门，以及电路的测量门：
qc.x(0)质量控制(0)质量控制测量(0,0)

## 物理代写|量子计算代写Quantum computer代考|Tossing two coins simultaneously

1. 导入我们需要的类和方法：
from qiskit import QuantumCircuit, Aer, execute
from qiskit.tools.visualization import plot_histogram
from IPython.core.display import display
2. 用两个量子位和两个经典位建立我们的量子电路：
qC=量子电路(2,2)
3. 将 Hadamard 门和测量门添加到电路中：
qc⋅H([0,1])
质量控制。措施([0,1],[0,1])
display (qc.draw (‘mpl’))
注意我们现在如何使用列表来引用多个量子位和多个位。例如，我们通过使用将 Hadamard 门应用于 qubits 0 和 1[0,1]作为输入：
图4.14– 一个 2 量子比特的量子抛硬币电路
4. 将后端设置为我们的本地模拟器：
backend = Aer.get_backend (‘qasm_simulator’)
5. 一次性运行作业：
counts = execute (qc, backend, shot=1)。结果（）。
get_counts (qc)
同样，我们使用的是流线型代码，因为我们只对这里的计数感兴趣。

## 有限元方法代写

tatistics-lab作为专业的留学生服务机构，多年来已为美国、英国、加拿大、澳洲等留学热门地的学生提供专业的学术服务，包括但不限于Essay代写，Assignment代写，Dissertation代写，Report代写，小组作业代写，Proposal代写，Paper代写，Presentation代写，计算机作业代写，论文修改和润色，网课代做，exam代考等等。写作范围涵盖高中，本科，研究生等海外留学全阶段，辐射金融，经济学，会计学，审计学，管理学等全球99%专业科目。写作团队既有专业英语母语作者，也有海外名校硕博留学生，每位写作老师都拥有过硬的语言能力，专业的学科背景和学术写作经验。我们承诺100%原创，100%专业，100%准时，100%满意。

## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。